When a=4, b=5, c=2, what is the value of b**2-ac

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>
<gadget id="calculator">4 * 2</gadget>
<output>8</output>
<gadget id="calculator">25 - 8</gadget>
<output>17</output>
<result>17</result>


使方程5X+7=42的两边相等的未知数的值是多少．

What is the value of the unknown that makes both sides of the equation 5X+7=42 equal.

<gadget id="calculator">42 - 7</gadget>
<output>35</output>
<gadget id="calculator">35 / 5</gadget>
<output>7</output>
<result>7</result>


养殖场养了鸡、鸭、鹅三种家禽，鸡和鸭共占总数的(3/4)，鸡和鹅共占总数的(3/5)，鸡占总数的几分之几？

Chickens, ducks, and geese are raised in the farm. Chickens and ducks account for 3/4 of the total, and chickens and geese account for 3/5 of the total. What percentage of the total are chickens?

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>
<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">(3/5) - (1/4)</gadget>
<output>7/20 = around 0.35</output>
<result>7/20 = around 0.35</result>


李师傅生产一批零件，工作4天生产96个零件，照这样计算，如果再生产3天就完成任务．李师傅生产这批零件共有多少个？(用比例方法解)

Master Li produces a batch of parts and works for 4 days to produce 96 parts. According to this calculation, if the production takes another 3 days, the task will be completed. How many parts did Master Li produce in this batch? (Solution by proportional method)

<gadget id="calculator">96 / 4</gadget>
<output>24</output>
<gadget id="calculator">24 * 4</gadget>
<output>96</output>
<gadget id="calculator">24 * 3</gadget>
<output>72</output>
<gadget id="calculator">96 + 72</gadget>
<output>168</output>
<result>168</result>


比(1/2)大，比7小，分母是6的最简分数有多少个．

Greater than (1/2), smaller than 7, how many simplified fractions have the denominator 6?


某人以八折优惠价买一套衣服节省15元钱，则此人买这套衣服用去多少元钱．

If a person buys a set of clothes at a 20% discount and saves 15 yuan, how much does the person spend on buying the suit?

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">15 / (1/5)</gadget>
<output>75</output>
<gadget id="calculator">75 - 15</gadget>
<output>60</output>
<result>60</result>


一个工艺品盒子长30cm，宽20cm，高10cm，现将3个这样折包装盒包装在一起，你能想出几种包装方法(可画图表示)？至少要用多少包装纸？(包装纸重叠处忽略不计)

A handicraft box is 30cm long, 20cm wide, and 10cm high. Now pack 3 such folding boxes together. How many packaging methods can you think of (can be shown by drawing)? How much wrapping paper should I use at least? (overlapping paper is ignored)

<gadget id="calculator">30 * 20</gadget>
<output>600</output>
<gadget id="calculator">30 * 10 * 3</gadget>
<output>900</output>
<gadget id="calculator">20 * 10 * 3</gadget>
<output>600</output>
<gadget id="calculator">600 + 900 + 600</gadget>
<output>2_100</output>
<gadget id="calculator">2_100 * 2</gadget>
<output>4_200</output>
<result>4_200</result>


<gadget id="calculator">2 ** 2</gadget>
<output>4</output>
<gadget id="calculator">6 ** 2</gadget>
<output>36</output>
<gadget id="calculator">4 + 36</gadget>
<output>40</output>
<result>40</result>


分子是1的最大真分数是多少

What is the largest true fraction whose numerator is 1?

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>
<result>1/2 = around 0.5</result>


Observe the rules, what is the 2013th number in the column (1/2), (3/4), (5/6), (7/8), ....

<gadget id="calculator">2_013 - 1</gadget>
<output>2_012</output>
<gadget id="calculator">2_012 * 2</gadget>
<output>4_024</output>
<gadget id="calculator">1 + 4_024</gadget>
<output>4_025</output>
<gadget id="calculator">2 + 4_024</gadget>
<output>4_026</output>
<gadget id="calculator">4_025 / 4_026</gadget>
<output>4_025/4_026 = around 0.999752</output>
<result>4_025/4_026 = around 0.999752</result>


三角形ABC中，∠A=24°，∠B=106°，∠C=多少．

In triangle ABC, ∠A=24°, ∠B=106°, ∠C=how much.

<gadget id="calculator">180 - 24 - 106</gadget>
<output>50</output>
<result>50</result>


(7/100)米用小数表示是多少米

<gadget id="calculator">7 / 100</gadget>
<output>7/100 = around 0.07</output>
<result>7/100 = around 0.07</result>


两辆汽车相距120千米，甲车在乙车前面，甲车每小时行70千米，乙车每小时行90千米，乙车追上甲车需要几个小时？

Two cars are 120 kilometers apart. Car A is in front of car B. Car A travels 70 kilometers per hour, and car B travels 90 kilometers per hour. How many hours does it take for car B to catch up with car A?

<gadget id="calculator">90 - 70</gadget>
<output>20</output>
<gadget id="calculator">120 / 20</gadget>
<output>6</output>
<result>6</result>


电视机厂计划全年生产彩电12600台，实际9个月就完成了全年计划，照这样计算，全年超过计划多少台？

The TV factory plans to produce 12,600 color TV sets in a year, but actually completed the annual plan in 9 months. Based on this calculation, how many sets will exceed the plan in the whole year?

<gadget id="calculator">12_600 / 9</gadget>
<output>1_400</output>
<gadget id="calculator">1_400 * 12</gadget>
<output>16_800</output>
<gadget id="calculator">16_800 - 12_600</gadget>
<output>4_200</output>
<result>4_200</result>


小明家11月用电50度，是10月的(4/5)，10月用电多少度？算式是多少

Xiaoming’s family used 50 kwh of electricity in November, which was in October (4/5). How much kwh did they use in October? what is the formula

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">50 / (4/5)</gadget>
<output>125/2 = around 62.5</output>
<result>125/2 = around 62.5</result>


把一根长1米，底面积为3.14平方米的圆柱锯成两个小圆柱，它的表面积增加多少平方米

If a cylinder with a length of 1 meter and a base area of 3.14 square meters is sawed into two small cylinders, how much square meters will its surface area increase

<gadget id="calculator">3.14 * 2</gadget>
<output>6.28</output>
<result>6.28</result>


把从1开始的所有奇数进行分组，其中每组的第一个数都等于此组中所有数的个数，如1，(3、5、7)，(9、11、13、15、17、19、21、23、25)，(27、29、…79)，(81、…)，则第5组中所有数的和是多少．

Group all odd numbers starting from 1, where the first number in each group is equal to the number of all numbers in this group, such as 1, (3, 5, 7), (9, 11, 13, 15, 17 , 19, 21, 23, 25), (27, 29, ... 79), (81, ...), then what is the sum of all the numbers in the fifth group.

<gadget id="calculator">81 * 81</gadget>
<output>6_561</output>
<gadget id="calculator">81 - 1</gadget>
<output>80</output>
<gadget id="calculator">2 / 2</gadget>
<output>1</output>
<gadget id="calculator">81 * 80 * 1</gadget>
<output>6_480</output>
<gadget id="calculator">6_561 + 6_480</gadget>
<output>13_041</output>
<result>13_041</result>


图书馆买来一些书，把它分别放在8个书架上，前7个书架平均每个书架放103本书，最后一个书架上放了88本书．图书馆一共买了多少本书？

The library buys some books and puts them on 8 bookshelves. The first 7 bookshelves hold 103 books on average, and the last bookshelf holds 88 books. How many books did the library buy in total?

<gadget id="calculator">731 + 88</gadget>
<output>819</output>
<result>819</result>


在鸟岛越冬的白鹤有16只，白天鹅的只数是白鹤的11倍．在鸟岛越冬的白鹤和白天鹅一共有多少只？

There are 16 white cranes overwintering in Bird Island, and the number of white swans is 11 times that of white cranes. How many white cranes and white swans are there that winter in Bird Island?

<gadget id="calculator">16 * 11</gadget>
<output>176</output>
<gadget id="calculator">176 + 16</gadget>
<output>192</output>
<result>192</result>


一只东北虎重225千克，一只野牛的体重比一只东北虎的体重的3倍少28千克，野牛和东北虎共重多少千克？

A Siberian tiger weighs 225 kg, and a bison weighs 28 kg less than three times the weight of a Siberian tiger. How many kilograms do the bison and Siberian tiger weigh together?

<gadget id="calculator">225 * 3</gadget>
<output>675</output>
<gadget id="calculator">675 - 28</gadget>
<output>647</output>
<gadget id="calculator">647 + 225</gadget>
<output>872</output>
<result>872</result>


筑路队修一条12千米的公路，第一天修了全长的(2/9)，第二天修了(1/3)千米，还有多少千米没有修？

The road construction team repaired a 12-kilometer road. On the first day, they built (2/9) of the full length, and on the second day (1/3) the kilometer. How many kilometers are left to be repaired?

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>
<gadget id="calculator">12 * (2/9)</gadget>
<output>8/3 = around 2.666667</output>
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">12 - (8/3) - (1/3)</gadget>
<output>9</output>
<result>9</result>


上学期，某小学五年级共有学生147人，本学期转出2名女生，转入5名男生．这时女生和男生的人数比是7：8，本学期该年级有男生多少人？

In the last semester, there were 147 students in the fifth grade of a certain elementary school. In this semester, 2 girls were transferred out and 5 boys were transferred in. At this time, the ratio of girls to boys is 7:8. How many boys are there in this grade this semester?

<gadget id="calculator">147 - 2</gadget>
<output>145</output>
<gadget id="calculator">145 + 5</gadget>
<output>150</output>
<gadget id="calculator">7 + 8</gadget>
<output>15</output>
<gadget id="calculator">8 / 15</gadget>
<output>8/15 = around 0.533333</output>
<gadget id="calculator">150 * (8/15)</gadget>
<output>80</output>
<result>80</result>


一个正整数，它与13的和为5的倍数，与13的差为3的倍数．那么这个正整数最小是多少．

A positive integer whose sum with 13 is a multiple of 5 and whose difference with 13 is a multiple of 3. So what is the smallest positive integer.


无锡朝阳蔬菜公司运来a车蔬菜，每车装5吨，计划平均供应给8个菜场．那么平均每个菜场可分得多少吨蔬菜．

Wuxi Chaoyang Vegetable Company shipped a truckload of vegetables, each loaded with 5 tons, and planned to supply them to 8 vegetable farms on average. So how many tons of vegetables can be allocated to each vegetable market on average.

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>
<result>5/8 = around 0.625</result>


老师家七月份用电40度，比六月份用电量的(4/5)多0.4度，六月份用电多少度？

The teacher's house used 40 kwh of electricity in July, which was 0.4 kwh more than the electricity consumption in June (4/5). How much kwh was used in June?

<gadget id="calculator">40 - 0.4</gadget>
<output>39.6</output>
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">39.6 / (4/5)</gadget>
<output>49.5</output>
<result>49.5</result>


一个三角形的面积比和它等底等高的平行四边形面积少3.8平方厘米，这个平行四边形的面积是多少平方厘米．

The area of a triangle is 3.8 square centimeters less than the area of a parallelogram with the same base and height. What is the area of the parallelogram in square centimeters?

<gadget id="calculator">2 - 1</gadget>
<output>1</output>
<gadget id="calculator">3.8 * 1 * 2</gadget>
<output>7.6</output>
<result>7.6</result>


<gadget id="calculator">365 * 7.8</gadget>
<output>2_847</output>
<gadget id="calculator">36.5 * 23</gadget>
<output>839.5</output>
<gadget id="calculator">3.65 * 10</gadget>
<output>36.5</output>
<gadget id="calculator">839.5 - 36.5</gadget>
<output>803</output>
<gadget id="calculator">2_847 + 803</gadget>
<output>3_650</output>
<result>3_650</result>


一个体积是576立方厘米的长方体，正面面积是96平方厘米，侧面面积是48平方厘米，底面面积是多少平方厘米．

A cuboid with a volume of 576 cm3 has a front area of 96 cm2 and a side area of 48 cm2. What is the area of the base in cm2?

<gadget id="calculator">12 * 6</gadget>
<output>72</output>
<result>72</result>


4.04中第一个"4"所表示的数是第二个"4"所表示数的多少倍．

In 4.04, how many times the number represented by the first "4" is the number represented by the second "4".

<gadget id="calculator">4 / 0.04</gadget>
<output>100</output>
<result>100</result>


有5人一起去买商品．据他们说，任何两人所花的钱都少于他们花费总值的(1/3)．此话可信吗？

5 people go shopping together. According to them, the money spent by any two persons is less than (1/3) of the total value of their expenses. Is this statement credible?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<result>1/3 = around 0.333333</result>


某校四、五、六三个年级，已知五年级人数占三个年级总人数的25%，六年级人数是四年级的(3/4)，五年级比四年级少40人．问四、五、六年级共学生多少人？

There are three grades of four, five, and six in a certain school. It is known that the number of students in the fifth grade accounts for 25% of the total number of students in the three grades, the number of students in the sixth grade is 3/4, and the number of students in the fifth grade is 40 less than that of the fourth grade. How many students are there in the fourth, fifth and sixth grades?

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">40 / (1/4)</gadget>
<output>160</output>
<gadget id="calculator">160 - 40</gadget>
<output>120</output>
<gadget id="calculator">1 / (1/4)</gadget>
<output>4</output>
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>
<gadget id="calculator">4 - 1 - 1 - (3/4)</gadget>
<output>5/4 = around 1.25</output>
<gadget id="calculator">120 / (5/4)</gadget>
<output>96</output>
<gadget id="calculator">96 - 40</gadget>
<output>56</output>
<gadget id="calculator">56 / (1/4)</gadget>
<output>224</output>
<result>224</result>


一种长方形砖长48厘米，宽27厘米，用这样的砖铺成一块正方形地面，至少需要多少块这样的砖．

A rectangular brick is 48 cm long and 27 cm wide. How many such bricks are needed to pave a square floor with such bricks?

<gadget id="calculator">432 / 48</gadget>
<output>9</output>
<gadget id="calculator">432 / 27</gadget>
<output>16</output>
<gadget id="calculator">9 * 16</gadget>
<output>144</output>
<result>144</result>


现有含盐20%的盐水18克，根据需要，要把盐水的含盐率降低到12%，需要加水多少千克？

There are 18 grams of brine with a salt content of 20%. According to the needs, how many kilograms of water need to be added to reduce the salt content of the brine to 12%?

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">12 / 100</gadget>
<output>3/25 = around 0.12</output>
<gadget id="calculator">(1/5) / (3/25)</gadget>
<output>5/3 = around 1.666667</output>
<gadget id="calculator">18 * (5/3)</gadget>
<output>30</output>
<gadget id="calculator">30 - 18</gadget>
<output>12</output>
<gadget id="calculator">12 / 1_000</gadget>
<output>3/250 = around 0.012</output>
<result>3/250 = around 0.012</result>


一个长方体的茶叶筒，长8厘米，宽6厘米，高15厘米．如果在它的四周贴一圈商标纸，这张商标纸的面积至少有多少平方厘米？

A cuboid tea canister is 8 cm long, 6 cm wide, and 15 cm high. If a circle of trademark paper is pasted around it, what is the minimum square centimeter area of this trademark paper?

<gadget id="calculator">8 * 15</gadget>
<output>120</output>
<gadget id="calculator">6 * 15</gadget>
<output>90</output>
<gadget id="calculator">120 + 90</gadget>
<output>210</output>
<gadget id="calculator">210 * 2</gadget>
<output>420</output>
<result>420</result>


一种彩电先降价20%，后来又降价25%．现在彩电的售价相当于原价的百分之几？

The price of a color TV was reduced by 20% first, and then by 25%. What percentage of the original price is the current selling price of the color TV set?

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>
<gadget id="calculator">(4/5) * (3/4)</gadget>
<output>3/5 = around 0.6</output>
<result>3/5 = around 0.6</result>


一个梯形的上底长6厘米，如果上底增加3厘米就变成了正方形．原来这个梯形的面积是多少平方厘米．

The upper base of a trapezoid is 6 cm long, and if the upper base is increased by 3 cm, it becomes a square. What is the area of the trapezoid in square centimeters?

<gadget id="calculator">6 + 3</gadget>
<output>9</output>
<gadget id="calculator">6 + 9</gadget>
<output>15</output>
<gadget id="calculator">9 / 2</gadget>
<output>9/2 = around 4.5</output>
<gadget id="calculator">15 * (9/2)</gadget>
<output>135/2 = around 67.5</output>
<result>135/2 = around 67.5</result>


布袋里装有三种颜色的铅笔各11支，至少要取出多少支才保证三种颜色的铅笔都取到．

There are 11 pencils of each of the three colors in the cloth bag, at least how many pencils must be taken out to ensure that all the pencils of the three colors are taken.

<gadget id="calculator">22 + 1</gadget>
<output>23</output>
<result>23</result>


在正方形内画一个最大的圆，已知正方形的面积是16cm**2，圆的面积是多少cm**2．

Draw the largest circle inside the square. The area of the square is known to be 16cm**2. What is the area of the circle in cm**2?

<gadget id="calculator">4 / 2</gadget>
<output>2</output>
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>
<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>
<result>12.56</result>


张庄去年种450棵桃树，成活405棵，成活率为多少．

Zhangzhuang planted 450 peach trees last year, and 405 survived. What is the survival rate?

<gadget id="calculator">405 / 450</gadget>
<output>9/10 = around 0.9</output>
<gadget id="calculator">100 / 100</gadget>
<output>1</output>
<gadget id="calculator">(9/10) * 1</gadget>
<output>9/10 = around 0.9</output>
<result>9/10 = around 0.9</result>


一根钢管，第一次用去全长的(2/7)，第二次用去(3/7)米，还剩下1米，这根钢管全长多少米？

For a steel pipe, (2/7) of the full length is used for the first time, and (3/7) meters are used for the second time, leaving 1 meter left. How many meters is the total length of the steel pipe?

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>
<gadget id="calculator">(3/7) + 1</gadget>
<output>10/7 = around 1.428571</output>
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>
<gadget id="calculator">1 - (2/7)</gadget>
<output>5/7 = around 0.714286</output>
<gadget id="calculator">(10/7) / (5/7)</gadget>
<output>2</output>
<result>2</result>


摩托车驾驶员以每小时20千米的速度行驶了60千米，回来时每小时的速度是30千米，他的往返平均速度是多少千米．

A motorcyclist travels 60 kilometers at a speed of 20 kilometers per hour, and returns at a speed of 30 kilometers per hour. What is his average round-trip speed in kilometers?

<gadget id="calculator">60 * 2</gadget>
<output>120</output>
<gadget id="calculator">60 / 20</gadget>
<output>3</output>
<gadget id="calculator">60 / 30</gadget>
<output>2</output>
<gadget id="calculator">3 + 2</gadget>
<output>5</output>
<gadget id="calculator">120 / 5</gadget>
<output>24</output>
<result>24</result>


一个直角三角形的两条直角边分别是10cm和15cm，以10cm长的边为轴旋转一周，所得到立体图形的体积是多少．

If the two sides of a right triangle are 10cm and 15cm respectively, what is the volume of the three-dimensional figure obtained by rotating the 10cm side as the axis for one revolution?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">15 ** 2</gadget>
<output>225</output>
<gadget id="calculator">(1/3) * 3.14 * 225 * 10</gadget>
<output>2_355</output>
<result>2_355</result>


一件工作，甲、乙合做需4小时完成，乙、丙合做需5小时完成．现在先请甲、丙合做2小时后，余下的乙还需做6小时完成．乙单独做完这件工作要多少小时．

A job can be done in 4 hours if A and B work together, and in 5 hours if B and C work together. Now first ask A and C to work together for 2 hours, and the remaining B needs to do 6 hours to complete. How many hours will it take B to do the job alone?

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">(1/4) + (1/5)</gadget>
<output>9/20 = around 0.45</output>
<gadget id="calculator">(9/20) * 2</gadget>
<output>9/10 = around 0.9</output>
<gadget id="calculator">1 - (9/10)</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">6 - 4</gadget>
<output>2</output>
<gadget id="calculator">(1/10) / 2</gadget>
<output>1/20 = around 0.05</output>
<gadget id="calculator">1 / (1/20)</gadget>
<output>20</output>
<result>20</result>


一种商品，八月份降价10%，十月份又降价10%，现在的售价是162元．八月份未降价前的售价是多少元？

commodity whose price was reduced by 10% in August and another 10% in October, the current selling price is 162 yuan. How much is the selling price before the price cut in August?

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>
<gadget id="calculator">162 / (9/10) / (9/10)</gadget>
<output>200</output>
<result>200</result>


有浓缩橙汁450毫升，加入2升水，平均分给5人喝，平均每人喝到多少橙汁饮料？

There is 450 ml of concentrated orange juice, add 2 liters of water, and share it among 5 people on average, how much orange juice drink does each person drink on average?

<gadget id="calculator">2 * 1_000</gadget>
<output>2_000</output>
<gadget id="calculator">2_000 + 450</gadget>
<output>2_450</output>
<gadget id="calculator">2_450 / 5</gadget>
<output>490</output>
<result>490</result>


王芳看一本书，第一天看了总页数的(1/3)，第二天看的页数是第一天的(3/4)，这时还剩25页未看．这本书一共有多少页？

When Wang Fang reads a book, she reads (1/3) of the total pages on the first day, and reads (3/4) of the pages on the second day, leaving 25 pages unread. How many pages does this book have?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>
<gadget id="calculator">(1/3) * (3/4)</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1 - (1/3) - (1/4)</gadget>
<output>5/12 = around 0.416667</output>
<gadget id="calculator">25 / (5/12)</gadget>
<output>60</output>
<result>60</result>


小张买了24瓶汽水，适逢店里开展"空瓶换汽水"促销活动，活动规定"4个空瓶换一瓶汽水"．小张最多可喝到多少瓶汽水．

Xiao Zhang bought 24 bottles of soda, which coincided with the "empty bottles for soda" promotion in the store, which stipulated that "4 empty bottles were exchanged for a bottle of soda". How many bottles of soda can Xiao Zhang drink at most?

<gadget id="calculator">24 + 6 + 1 + 1</gadget>
<output>32</output>
<result>32</result>


读一本书，已读了全书的65%，未读的占全书的多少．

To read a book, 65% of the whole book has been read, and how much of the whole book has not been read.

<gadget id="calculator">65 / 100</gadget>
<output>13/20 = around 0.65</output>
<gadget id="calculator">1 - (13/20)</gadget>
<output>7/20 = around 0.35</output>
<result>7/20 = around 0.35</result>


某工厂去年制造一种零件，成本逐渐下降，每一季度的成本都比前一季度降低(1/4)，问第三季度的成本是第一季度的几分之几？

A factory manufactured a kind of parts last year, and the cost gradually decreased, and the cost in each quarter was reduced (1/4) compared with the previous quarter. What fraction of the cost in the third quarter was that in the first quarter?

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>
<gadget id="calculator">1 * (3/4) * (3/4)</gadget>
<output>9/16 = around 0.5625</output>
<result>9/16 = around 0.5625</result>


有81个同学要到河对岸的学校上学，而河边只有一只最多只能载11人的船，且没有船夫，问，这些同学全部过河至少要多少次？

There are 81 students who want to go to the school on the other side of the river, but there is only one boat on the river that can only carry 11 people at most, and there is no boatman. Ask, how many times will it take for all these students to cross the river at least?

<gadget id="calculator">81 - 11</gadget>
<output>70</output>
<gadget id="calculator">70 / 10</gadget>
<output>7</output>
<gadget id="calculator">7 + 1</gadget>
<output>8</output>
<result>8</result>


<gadget id="calculator">0.4 / 0.25</gadget>
<output>1.6</output>
<gadget id="calculator">0.25 * 1.6 * 4</gadget>
<output>1.6</output>
<result>1.6</result>


如果□+□+□=○+○，△+△+△=○+○+○+○+○，△=10，那么□=多少．

If □+□+□=○+○, △+△+△=○+○+○+○+○, △=10, then □=how much.

<gadget id="calculator">10 * 3</gadget>
<output>30</output>
<gadget id="calculator">30 / 5</gadget>
<output>6</output>
<gadget id="calculator">2 * 6</gadget>
<output>12</output>
<gadget id="calculator">12 / 3</gadget>
<output>4</output>
<result>4</result>


年龄分别为1～19岁的19个小孩围成一个圆圈，将所有相邻两个小孩的年龄以大减小所得的差值记录下来，则这19个差值总和的最大值是多少．

19 children aged 1 to 19 form a circle, and record the difference between the ages of two adjacent children by decreasing their ages. What is the maximum value of the sum of the 19 differences?


小红看一本书，第一天读了全书的一半多3页，第二天读了剩下的一半少3页，第三天读完余下的48页．这本书共有多少页？

Xiaohong reads a book. On the first day, she reads half of the book and more than 3 pages. On the second day, she reads the remaining half and less than 3 pages. On the third day, she reads the remaining 48 pages. How many pages does this book have?

<gadget id="calculator">48 - 3</gadget>
<output>45</output>
<gadget id="calculator">45 * 2</gadget>
<output>90</output>
<gadget id="calculator">90 + 3</gadget>
<output>93</output>
<gadget id="calculator">93 * 2</gadget>
<output>186</output>
<result>186</result>


用0，3，4，5，6，7，8，9这八个数字组成四个两位数(每个数字只许用一次)，要求它们的和是一个奇数，并且尽可能大，那么这四个两位数的和是多少．

Use the eight numbers 0, 3, 4, 5, 6, 7, 8, 9 to form four two-digit numbers (each number is only allowed once), and their sum is required to be an odd number and as large as possible, then What is the sum of these four two-digit numbers?

<gadget id="calculator">5 + 7 + 8 + 9</gadget>
<output>29</output>
<gadget id="calculator">29 * 10</gadget>
<output>290</output>
<gadget id="calculator">0 + 3 + 4 + 6</gadget>
<output>13</output>
<gadget id="calculator">290 + 13</gadget>
<output>303</output>
<result>303</result>


每排11个人，排成6排，如果每排3个人，应该怎么排？

There are 11 people in each row, and there are 6 rows. If there are 3 people in each row, how should they be arranged?

<gadget id="calculator">6 / 3</gadget>
<output>2</output>
<gadget id="calculator">11 * 2</gadget>
<output>22</output>
<result>22</result>


期末考试，小明的语文、数学的平均成绩是92分，加上英语后，三门的平均成绩是93分，英语得了多少分？

In the final exam, Xiao Ming's average score in Chinese and mathematics is 92 points. After adding English, the average score of the three subjects is 93 points. How many points did he score in English?

<gadget id="calculator">93 * 3</gadget>
<output>279</output>
<gadget id="calculator">92 * 2</gadget>
<output>184</output>
<gadget id="calculator">279 - 184</gadget>
<output>95</output>
<result>95</result>


四年级小朋友做数学游戏．第1个小朋友拿3粒弹子，第2个小朋友拿4粒弹子，第3个小朋友拿5粒弹子，…以此类推，后面的小朋友总比他前面的小朋友多拿1粒子弹，最后把弹子全拿完了．这些子弹如果平均分，每人可分到23粒．有多少个小朋友做数学游戏．

Fourth grade children play math games. The first child takes 3 marbles, the second child takes 4 marbles, the third child takes 5 marbles, and so on, the child behind always takes 1 more marble than the child in front of him, and finally puts the marbles It's all over. If these bullets are divided equally, each person can get 23 bullets. How many children do math games?


甲、乙两人在沿铁路的小道上相向而行．一列长130米的火车以每小时27千米的速度与甲同向前进．从追上到超过甲仅用20秒钟．这列火车与乙从相遇到离开仅用15秒．从火车追上甲到火车遇到乙，相隔5分钟，则乙遇到火车再过多少分钟与甲相遇？

A and B are walking towards each other along the railway track. A train with a length of 130 meters is moving in the same direction as A at a speed of 27 kilometers per hour. It only takes 20 seconds from catching up to surpassing A. It takes only 15 seconds for this train to meet B and leave. From the time when the train catches up with A to the time when the train encounters B, there is an interval of 5 minutes, how many minutes after B encounters the train and meets A?

<gadget id="calculator">900 / 60</gadget>
<output>15</output>
<result>15</result>


毛衣售价从每件120元降低到90元，降低了多少

The price of sweaters has been reduced from 120 yuan to 90 yuan per piece. How much has it been reduced?

<gadget id="calculator">120 - 90</gadget>
<output>30</output>
<gadget id="calculator">30 / 120</gadget>
<output>1/4 = around 0.25</output>
<result>1/4 = around 0.25</result>


李老师得到一笔稿费5000元，按规定超出800元部分按照14%的税率缴纳个人所得税．孪老师实际得到稿费多少元？

Mr. Li received a manuscript fee of 5,000 yuan, and the portion exceeding 800 yuan was subject to personal income tax at a rate of 14%. How much did Teacher Twin actually get in royalties?

<gadget id="calculator">5_000 - 800</gadget>
<output>4_200</output>
<gadget id="calculator">14 / 100</gadget>
<output>7/50 = around 0.14</output>
<gadget id="calculator">4_200 * (7/50)</gadget>
<output>588</output>
<gadget id="calculator">5_000 - 588</gadget>
<output>4_412</output>
<result>4_412</result>


小红看一本书，第一天看全书的(1/4)，第二天看全书的(2/5)，还剩98页没看，全书有多少页？

Xiaohong reads a book. She reads the whole book (1/4) on the first day, and (2/5) the whole book on the second day. There are 98 pages left. How many pages are there in the book?

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>
<gadget id="calculator">1 - (1/4) - (2/5)</gadget>
<output>7/20 = around 0.35</output>
<gadget id="calculator">98 / (7/20)</gadget>
<output>280</output>
<result>280</result>


蝙蝠每分钟飞行500米，大雁每分钟飞行的路程是蝙蝠的3倍．大雁每分钟飞行多少米？

Bats fly 500 meters per minute, and geese fly three times as far as bats per minute. How many meters does the geese fly per minute?

<gadget id="calculator">500 * 3</gadget>
<output>1_500</output>
<result>1_500</result>


建造一栋楼房，用了90万，比计划节约了(1/5)，计划投资多少万元？

It costs 900,000 yuan to build a building, which is 1/5 less than the plan. How much is the planned investment?

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">90 / (4/5)</gadget>
<output>225/2 = around 112.5</output>
<result>225/2 = around 112.5</result>


如果甲数的(5/9)是60，那么它的(2/3)是多少．

If (5/9) of A number is 60, then what is (2/3) of it.

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>
<gadget id="calculator">60 / (5/9)</gadget>
<output>108</output>
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>
<gadget id="calculator">108 * (2/3)</gadget>
<output>72</output>
<result>72</result>


一杯盐水，盐与盐水的比为1：5，再加上16克盐后，盐与盐水的比为1：4，原来盐水有多少千克？

For a cup of salt water, the ratio of salt to salt water is 1:5. After adding 16 grams of salt, the ratio of salt to salt water is 1:4. How many kilograms of salt water are there?

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">(1/4) * 16</gadget>
<output>4</output>
<gadget id="calculator">16 - 4</gadget>
<output>12</output>
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">(1/4) - (1/5)</gadget>
<output>1/20 = around 0.05</output>
<gadget id="calculator">12 / (1/20) / 1_000</gadget>
<output>6/25 = around 0.24</output>
<result>6/25 = around 0.24</result>


两个相邻自然数的和是145，较小的自然数是多少．

The sum of two adjacent natural numbers is 145, what is the smaller natural number?

<gadget id="calculator">145 - 1</gadget>
<output>144</output>
<gadget id="calculator">144 / 2</gadget>
<output>72</output>
<result>72</result>


甲、乙两艘轮船，同时从两个码头相对开出，甲船每小时行驶23.5千米，乙船每小时行驶28.5千米，经过8小时相遇，两个码头相距多少千米？

Two ships, A and B, set off from two piers at the same time. Ship A travels 23.5 kilometers per hour, and ship B travels 28.5 kilometers per hour. After 8 hours, how many kilometers are the distance between the two piers?

<gadget id="calculator">23.5 + 28.5</gadget>
<output>52</output>
<gadget id="calculator">52 * 8</gadget>
<output>416</output>
<result>416</result>


现行我国居民人民币定期储蓄一年期的年利率是1.98%，利息税是20%．李华在银行存了1000元压岁钱，一年后他可得本金和利息共多少元．

The current one-year annual interest rate of RMB regular savings for Chinese residents is 1.98%, and the interest tax is 20%. Li Hua deposited 1,000 yuan in the bank as a new year's money. After one year, he will get the total amount of principal and interest.

<gadget id="calculator">1.98 / 100</gadget>
<output>0.0198</output>
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">1_000 * 0.0198 * 1 * (4/5)</gadget>
<output>15.84</output>
<gadget id="calculator">15.84 + 1_000</gadget>
<output>1_015.84</output>
<result>1_015.84</result>


36个同学排队做游戏，每两个女生中间是两个男生，第一个是女生，这个队伍中男生有多少人？

36 students line up to play the game. There are two boys between every two girls. The first one is a girl. How many boys are there in this team?

<gadget id="calculator">36 / 3</gadget>
<output>12</output>
<gadget id="calculator">12 * 2</gadget>
<output>24</output>
<result>24</result>


某年我国城市人口是3.344亿人，农村人口约是城市的2.29倍，农村有多少人？(可以使用计算器)

In a certain year, the urban population of our country is 334.4 million, and the rural population is about 2.29 times that of the urban. How many people are there in the rural areas? (Calculator available)

<gadget id="calculator">3.344 * 2.29</gadget>
<output>7.65776</output>
<result>7.65776</result>


一块菜地的面积是(5/8)公顷，青菜的面积占这块地的(1/4)，茄子的面积占这块地的(1/5)，其余的种辣椒，辣椒的面积占这块地的几分之几？

The area of a vegetable field is (5/8) hectares, the area of green vegetables occupies (1/4), the area of eggplant occupies (1/5) of this field, and the rest is planted with peppers, the area of peppers occupies What fraction of this land?

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">1 - (1/4) - (1/5)</gadget>
<output>11/20 = around 0.55</output>
<result>11/20 = around 0.55</result>


王阿姨买8个鸡蛋，花了4.8元，平均每个鸡蛋多少元．

Aunt Wang bought 8 eggs and spent 4.8 yuan, how much is each egg on average.

<gadget id="calculator">4.8 / 8</gadget>
<output>0.6</output>
<result>0.6</result>


一个长方体的棱长和是48厘米，长4厘米，高3厘米，宽多少．

The sum of the sides of a cuboid is 48 cm, the length is 4 cm, the height is 3 cm, and the width is how much.

<gadget id="calculator">4 + 3</gadget>
<output>7</output>
<gadget id="calculator">7 * 4</gadget>
<output>28</output>
<gadget id="calculator">48 - 28</gadget>
<output>20</output>
<gadget id="calculator">20 / 4</gadget>
<output>5</output>
<result>5</result>


一件工程，甲独做10天完成，乙独做15天完成．甲先独做了全部工程的(3/10)，余下的由乙单独完成，还需要几天？

A project can be completed by A alone in 10 days and by B in 15 days. A first does all the work (3/10), and B completes the rest, how many days will it take?

<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>
<gadget id="calculator">1 - (3/10)</gadget>
<output>7/10 = around 0.7</output>
<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>
<gadget id="calculator">(7/10) / (1/15)</gadget>
<output>21/2 = around 10.5</output>
<result>21/2 = around 10.5</result>


一块三角形模板，它的底是13分米，高是4分米，把它的正反两面都涂上油漆(侧面不涂)，涂油漆的面积是多少？

A triangular formwork, its base is 13 decimeters, its height is 4 decimeters, its front and back sides are painted with paint (the sides are not painted), what is the painted area?

<gadget id="calculator">4 / 2</gadget>
<output>2</output>
<gadget id="calculator">13 * 2 * 2</gadget>
<output>52</output>
<result>52</result>


3个同样大的圆柱体，可以熔铸成多少个与它等底等高的圆锥．

How many cones with the same base and height can be cast from 3 cylinders of the same size?

<gadget id="calculator">3 * 3</gadget>
<output>9</output>
<result>9</result>


一条裤子258元，一件大衣的价钱是一条裤子的3倍，买这样一套衣服要多少钱？

A pair of trousers is 258 yuan, and the price of a coat is three times that of a pair of trousers. How much does it cost to buy such a set of clothes?

<gadget id="calculator">258 * 3</gadget>
<output>774</output>
<gadget id="calculator">258 + 774</gadget>
<output>1_032</output>
<result>1_032</result>


加工一批零件，甲、乙二人合作需12天完成；现由甲先工作3天，然后由乙工作2天还剩这批零件的(4/5)没完成，已知甲每天比乙少加工4个，则这批零件共有多少个．

Processing a batch of parts, it takes 12 days for A and B to complete the cooperation; now A works for 3 days first, and then B works for 2 days, and (4/5) of this batch of parts has not been completed. It is known that A is faster than B every day. If 4 parts are processed less, how many parts are there in total in this batch.

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">(1/12) * 2</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">1 - (4/5) - (1/6)</gadget>
<output>1/30 = around 0.033333</output>
<gadget id="calculator">3 - 2</gadget>
<output>1</output>
<gadget id="calculator">(1/30) / 1</gadget>
<output>1/30 = around 0.033333</output>
<gadget id="calculator">(1/12) - (1/30) - (1/30)</gadget>
<output>1/60 = around 0.016667</output>
<gadget id="calculator">4 / (1/60)</gadget>
<output>240</output>
<result>240</result>


按今天计算，上午卖了12箱，下午卖的是上午的1.5倍，全天能销售360千克．每箱苹果多少千克？

According to today's calculation, 12 boxes were sold in the morning, and 1.5 times that in the afternoon, and 360 kg can be sold in a whole day. How many kilograms per carton of apples?

<gadget id="calculator">12 * 1.5</gadget>
<output>18</output>
<gadget id="calculator">12 + 18</gadget>
<output>30</output>
<gadget id="calculator">360 / 30</gadget>
<output>12</output>
<result>12</result>


某商场卖出影碟机8台，每台售价240元，卖出一台洗衣机898元．影碟机和洗衣机共卖了多少元？

A shopping mall sells 8 DVD players, each priced at 240 yuan, and sells a washing machine for 898 yuan. How much did the DVD player and washing machine cost?

<gadget id="calculator">240 * 8</gadget>
<output>1_920</output>
<gadget id="calculator">1_920 + 898</gadget>
<output>2_818</output>
<result>2_818</result>


甲数的(1/3)与乙数的(2/9)相等，乙数是126，甲数是多少．

(1/3) of the number A is equal to (2/9) of the number B. The number B is 126. What is the number A?

<gadget id="calculator">2 / 9</gadget>
<output>2/9 = around 0.222222</output>
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">(2/9) / (1/3)</gadget>
<output>2/3 = around 0.666667</output>
<gadget id="calculator">126 * (2/3)</gadget>
<output>84</output>
<result>84</result>


三角形三边之长的比为1：2：3，周长是60cm．最短边长多少厘米．

The ratio of the lengths of the sides of a triangle is 1:2:3 and the perimeter is 60 cm. What is the length of the shortest side in centimeters.

<gadget id="calculator">1 + 2 + 3</gadget>
<output>6</output>
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">60 * (1/6)</gadget>
<output>10</output>
<result>10</result>


新华小学为灾区小朋友捐书250本，兴隆小学捐书460本，两所小学一共捐书多少本？

Xinhua Primary School donated 250 books to the children in the disaster area, and Xinglong Primary School donated 460 books. How many books were donated by the two primary schools?

<gadget id="calculator">250 + 460</gadget>
<output>710</output>
<result>710</result>


一本童话书有120页，小明第一天读了全书的(1/6)，第二天读了余下的(1/4)，小明第二天读了多少页？

A fairy tale book has 120 pages. Xiao Ming read (1/6) of the whole book on the first day and the rest (1/4) on the second day. How many pages did Xiao Ming read on the second day?

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">1 - (1/6)</gadget>
<output>5/6 = around 0.833333</output>
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">120 * (5/6) * (1/4)</gadget>
<output>25</output>
<result>25</result>


杂技演员表演独轮车走钢丝，车轮的直径是40厘米，要骑过3.14米长的钢丝，车轮要转动多少圈．

An acrobat performs a unicycle tightrope walk. The diameter of the wheel is 40 centimeters. To ride a 3.14-meter-long steel wire, how many turns does the wheel have to make?

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>
<gadget id="calculator">3.14 * (2/5)</gadget>
<output>1.256</output>
<gadget id="calculator">31.4 / 1.256</gadget>
<output>25</output>
<result>25</result>


<gadget id="calculator">8 / 56</gadget>
<output>1/7 = around 0.142857</output>
<gadget id="calculator">56 * (1/7) * 8</gadget>
<output>64</output>
<result>64</result>


老张贷款买房子，在银行贷款25万，已知银行的贷款年利率是6.2%，到期归还本利和共482500元，求他贷款多少年？

Lao Zhang bought a house with a loan of 250,000 from the bank. It is known that the annual interest rate of the bank loan is 6.2%.

<gadget id="calculator">482_500 - 250_000</gadget>
<output>232_500</output>
<gadget id="calculator">6.2 / 100</gadget>
<output>0.062</output>
<gadget id="calculator">250_000 * 0.062</gadget>
<output>15_500</output>
<gadget id="calculator">232_500 / 15_500</gadget>
<output>15</output>
<result>15</result>


要制作一个长4米，宽2.5米，高1.2米的无盖水箱，至少要用多少平方米铁皮？

To make a water tank with a length of 4 meters, a width of 2.5 meters and a height of 1.2 meters without a cover, how many square meters of iron sheet should be used at least?

<gadget id="calculator">4 + 2.5</gadget>
<output>6.5</output>
<gadget id="calculator">6.5 * 2 * 1.2</gadget>
<output>15.6</output>
<gadget id="calculator">4 * 2.5</gadget>
<output>10</output>
<gadget id="calculator">15.6 + 10</gadget>
<output>25.6</output>
<result>25.6</result>


平行四边形木板的面积是72平方分米，底是12分米，高是多少．

The area of the parallelogram plank is 72 square decimeters, the base is 12 decimeters, what is the height.

<gadget id="calculator">72 / 12</gadget>
<output>6</output>
<result>6</result>


(8/23)的分子、分母都加上同一个数，就等于(11/16)，加上的数是多少．

If the same number is added to the numerator and denominator of (8/23), it is equal to (11/16). What is the added number?

<gadget id="calculator">11 / 16</gadget>
<output>11/16 = around 0.6875</output>
<gadget id="calculator">(11/16) * 23</gadget>
<output>253/16 = around 15.8125</output>
<gadget id="calculator">(253/16) - 8</gadget>
<output>125/16 = around 7.8125</output>
<gadget id="calculator">1 - (11/16)</gadget>
<output>5/16 = around 0.3125</output>
<gadget id="calculator">(125/16) / (5/16)</gadget>
<output>25</output>
<result>25</result>


小明读一本480页的故事书，已经读了320页，剩下的计划每天读32页，还需几天读完？

Xiao Ming reads a 480-page story book, and has already read 320 pages. The rest plans to read 32 pages a day. How many days will it take to finish reading?

<gadget id="calculator">480 - 320</gadget>
<output>160</output>
<gadget id="calculator">160 / 32</gadget>
<output>5</output>
<result>5</result>


<gadget id="calculator">12 / 5</gadget>
<output>12/5 = around 2.4</output>
<gadget id="calculator">6 / (12/5)</gadget>
<output>5/2 = around 2.5</output>
<result>5/2 = around 2.5</result>


某市举行的英语故事大赛中有9人组成的评审小组，小丽获得第一名，得分情况是：去掉一个最高分和一个最低分，平均分数是9.67分，如果只去掉最低分，平均得分是9.70分，小丽的最高得分是多少分．

In the English story contest held in a certain city, there was a review team composed of 9 people. Xiaoli won the first place. The score is as follows: remove the highest score and the lowest score, and the average score is 9.67 points. If only the lowest score is removed, the average score is 9.67. It is 9.70 points. What is Xiaoli's highest score?

<gadget id="calculator">9.7 * 8</gadget>
<output>77.6</output>
<gadget id="calculator">9.67 * 7</gadget>
<output>67.69</output>
<gadget id="calculator">77.6 - 67.69</gadget>
<output>9.91</output>
<result>9.91</result>


从一个长8分米，宽5分米的长方形木板上锯下一个最大的圆，这个圆的面积是多少．

Saw the largest circle from a rectangular board with a length of 8 decimeters and a width of 5 decimeters. What is the area of this circle?

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>
<gadget id="calculator">(5/2) ** 2</gadget>
<output>25/4 = around 6.25</output>
<gadget id="calculator">3.14 * (25/4)</gadget>
<output>19.625</output>
<result>19.625</result>


一种面粉的价格是每千克2.4元．买8.5千克这样的面粉应付多少元．

The price of a kind of flour is 2.4 yuan per kilogram. How much does it cost to buy 8.5 kg of such flour.

<gadget id="calculator">2.4 * 8.5</gadget>
<output>20.4</output>
<result>20.4</result>


甲数/乙数=3，当甲数扩大2倍，乙数缩小2倍时，商是多少．

Number A/Number B=3, when Number A doubles and Number B shrinks twice, what is the quotient?

<gadget id="calculator">3 * 2 * 2</gadget>
<output>12</output>
<result>12</result>


把两个棱长1分米的正方形拼成一个长方形后，所得长方形的表面积比原来两个正方形的表面积之和减少了多少

How much is the surface area of the resulting rectangle reduced from the sum of the surface areas of the original two squares when two squares with sides of 1 decimeter are put together to form a rectangle?

<gadget id="calculator">1 * 1 * 2</gadget>
<output>2</output>
<gadget id="calculator">1 * 1 * 6 * 2</gadget>
<output>12</output>
<gadget id="calculator">2 / 12</gadget>
<output>1/6 = around 0.166667</output>
<result>1/6 = around 0.166667</result>


<gadget id="calculator">34.3 * 0.2</gadget>
<output>6.86</output>
<gadget id="calculator">3.94 + 6.86</gadget>
<output>10.8</output>
<gadget id="calculator">1.08 / 10.8</gadget>
<output>0.1</output>
<gadget id="calculator">0.1 - 0.08</gadget>
<output>0.02</output>
<result>0.02</result>


一个数的(1/5)比它的(1/3)少8，求这个数．

(1/5) of a number is 8 less than its (1/3), find this number.

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">(1/3) - (1/5)</gadget>
<output>2/15 = around 0.133333</output>
<gadget id="calculator">8 / (2/15)</gadget>
<output>60</output>
<result>60</result>


一本课外书，原价30元，现在书按八五折出售，书比原价便宜了多少元．

The original price of an extra-curricular book is 30 yuan. Now the book is sold at a 15% discount. How much is the book cheaper than the original price?

<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>
<gadget id="calculator">1 - (17/20)</gadget>
<output>3/20 = around 0.15</output>
<gadget id="calculator">30 * (3/20)</gadget>
<output>9/2 = around 4.5</output>
<result>9/2 = around 4.5</result>


学校礼堂长20米，宽15米，高8米，要粉刷礼堂的顶棚和四周墙壁，除去门窗面积80平方米，平均每平方米用涂料0.5千米，一共需涂料多少千克？

The school auditorium is 20 meters long, 15 meters wide, and 8 meters high. The ceiling and surrounding walls of the auditorium need to be painted, and the area of doors and windows is 80 square meters. The average paint used per square meter is 0.5 kilometers. How many kilograms of paint are needed in total?

<gadget id="calculator">0.5 * 760</gadget>
<output>380</output>
<result>380</result>


学校买回4个篮球，每个45元；6个足球，每个38元，一共花了多少元．

The school bought back 4 basketballs, 45 yuan each; 6 footballs, 38 yuan each, how much did it cost in total?

<gadget id="calculator">45 * 4</gadget>
<output>180</output>
<gadget id="calculator">38 * 6</gadget>
<output>228</output>
<gadget id="calculator">180 + 228</gadget>
<output>408</output>
<result>408</result>


36/12=3，当除数加12时，要使商不变被除数应加多少

36/12=3, when the divisor is added to 12, how much should the dividend be added to keep the quotient unchanged


某班学生合买一件纪念品，如果每人出6元，则多48元，如果每人出5元，则少3元，求这个班共有学生多少人？

Students in a certain class jointly buy a souvenir. If each student pays 6 yuan, the extra 48 yuan will be added. If each student pays 5 yuan, the discount will be 3 yuan. How many students are there in this class?

<gadget id="calculator">48 + 3</gadget>
<output>51</output>
<gadget id="calculator">6 - 5</gadget>
<output>1</output>
<gadget id="calculator">51 / 1</gadget>
<output>51</output>
<result>51</result>


已知平行四边形的底是15分米，高7分米，求面积？

It is known that the base of the parallelogram is 15 decimeters and the height is 7 decimeters. Find the area?

<gadget id="calculator">15 * 7</gadget>
<output>105</output>
<result>105</result>


超市卖出两种商品，都卖了660元，其中一件盈利10%，另一件亏损10%，这两件商品原价一共多少钱？列式为多少

The supermarket sells two commodities, both of which cost 660 yuan, one of which makes a 10% profit and the other a 10% loss. How much is the total original price of these two commodities? What is the column

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>
<gadget id="calculator">660 / (11/10)</gadget>
<output>600</output>
<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>
<gadget id="calculator">660 / (9/10)</gadget>
<output>2_200/3 = around 733.333333</output>
<gadget id="calculator">600 + (2_200/3)</gadget>
<output>4_000/3 = around 1_333.333333</output>
<result>4_000/3 = around 1_333.333333</result>


分数(1997/2000)的分子和分母同时加上一个自然数多少所得的新分数是(2005/2006)．

The new fraction obtained by adding a natural number to the numerator and denominator of the fraction (1997/2000) is (2005/2006).


一根绳子，第一次用去全长的20%，第二次用去全长的30%，两次用去绳子的长度相差2米，这根绳子原来的长度是多少．

For a rope, 20% of its total length is used for the first time, and 30% of its total length is used for the second time. The difference between the two lengths of the rope is 2 meters. What is the original length of the rope?

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">(3/10) - (1/5)</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">2 / (1/10)</gadget>
<output>20</output>
<result>20</result>


将一个三角形的底边与高都增加10%，那么新的三角形面积比原来三角形面积增加多少．

If both the base and the height of a triangle are increased by 10%, what is the increase in the area of the new triangle compared to the area of the original triangle?

<gadget id="calculator">21 / 100</gadget>
<output>21/100 = around 0.21</output>
<result>21/100 = around 0.21</result>


一个长方形的长是8分米，宽是10厘米，那么这个长方形的面积是多少平方厘米．

If the length of a rectangle is 8 decimeters and the width is 10 centimeters, what is the area of the rectangle in square centimeters?

<gadget id="calculator">8 * 10</gadget>
<output>80</output>
<gadget id="calculator">80 * 10</gadget>
<output>800</output>
<result>800</result>


妈妈买回3.5千克苹果，每千克2.25元，买这些苹果一共花多少钱？

Mom bought 3.5 kilograms of apples at 2.25 yuan per kilogram. How much did you spend on these apples?

<gadget id="calculator">3.5 * 2.25</gadget>
<output>7.875</output>
<result>7.875</result>


杭州胜利小学三年级有四个班级，其中三1班有38人，三2班有40人，其他2个班共82人，这个年级平均每班多少人．

There are four classes in the third grade of Hangzhou Shengli Primary School. Among them, there are 38 students in class 31, 40 students in class 32, and 82 students in the other two classes. The average number of students per class for this grade.

<gadget id="calculator">38 + 40 + 82</gadget>
<output>160</output>
<gadget id="calculator">160 / 4</gadget>
<output>40</output>
<result>40</result>


What is the product of (1/2) times the sum of (1/4) and (1/3)?

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">(1/4) + (1/3)</gadget>
<output>7/12 = around 0.583333</output>
<gadget id="calculator">(1/2) * (7/12)</gadget>
<output>7/24 = around 0.291667</output>
<result>7/24 = around 0.291667</result>


明明在计算28-(□+8)时，弄错了计算顺序，他先算了28-□，结果等于34，你知道正确的结果是多少吗？

Obviously, when calculating 28-(□+8), he made a mistake in the order of calculation. He calculated 28-□ first, and the result was equal to 34. Do you know the correct result?

<gadget id="calculator">2 + 8</gadget>
<output>10</output>
<gadget id="calculator">28 - 10</gadget>
<output>18</output>
<result>18</result>


一条水渠长68.55米，另一条水渠比它长25.48米，两条水渠共长多少米？

One canal is 68.55 meters long and the other is 25.48 meters longer than it. How many meters are the two canals in total?

<gadget id="calculator">68.55 + 25.48</gadget>
<output>94.03</output>
<gadget id="calculator">68.55 + 94.03</gadget>
<output>162.58</output>
<result>162.58</result>


一个等边三角形，它的周长是15厘米，高是4.4厘米．这个三角形的面积是多少平方厘米？

An equilateral triangle has a perimeter of 15 cm and a height of 4.4 cm. What is the area of this triangle in square centimeters?

<gadget id="calculator">15 / 3</gadget>
<output>5</output>
<gadget id="calculator">4.4 / 2</gadget>
<output>2.2</output>
<gadget id="calculator">5 * 2.2</gadget>
<output>11</output>
<result>11</result>


有一个长方形的花园，面积240平方米，长是20米，这个长方形花园的周长是多少米．

There is a rectangular garden with an area of 240 square meters and a length of 20 meters. What is the perimeter of this rectangular garden in meters?

<gadget id="calculator">240 / 20</gadget>
<output>12</output>
<gadget id="calculator">20 + 12</gadget>
<output>32</output>
<gadget id="calculator">32 * 2</gadget>
<output>64</output>
<result>64</result>


一个长方形的面积是5.4平方米，它的宽是0.9米，长是多少米．

The area of a rectangle is 5.4 square meters, its width is 0.9 meters, and its length is in meters.

<gadget id="calculator">5.4 / 0.9</gadget>
<output>6</output>
<result>6</result>


一个平行四边形的底是7.2厘米，高是3厘米，与它等底等高的三角形的面积是多少平方厘米．

If the base of a parallelogram is 7.2 cm and the height is 3 cm, what is the area in square centimeters of a triangle with the same base and height?

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>
<gadget id="calculator">7.2 * (3/2)</gadget>
<output>10.8</output>
<result>10.8</result>


毛毛是1999年6月25出生的，到今年生日时，她满多少周岁．

Maomao was born on June 25, 1999. How old will she be on her birthday this year?

<gadget id="calculator">2_014 - 1_999</gadget>
<output>15</output>
<result>15</result>


有按个连续自然数A、A+1、A+2，如果A是9的倍数，A+1是11的倍数，A+2是13的倍数．那么A最小可以去多少？

There are consecutive natural numbers A, A+1, and A+2. If A is a multiple of 9, A+1 is a multiple of 11, and A+2 is a multiple of 13. So how much can A go?

<gadget id="calculator">9 * 11 * 13</gadget>
<output>1_287</output>
<gadget id="calculator">1_287 + 9</gadget>
<output>1_296</output>
<gadget id="calculator">1_296 / 2</gadget>
<output>648</output>
<result>648</result>


体育用品商店上午卖出255根跳绳，下午卖出340根跳绳，还剩205根跳绳．体育用品商店原来有多少根跳绳？

The sporting goods store sells 255 skipping ropes in the morning and 340 skipping ropes in the afternoon, leaving 205 skipping ropes left. How many jump ropes did the sporting goods store originally have?

<gadget id="calculator">255 + 340 + 205</gadget>
<output>800</output>
<result>800</result>


在电脑上把一张长6厘米，宽4厘米的照片按比例放大，放大后的照片长是15厘米，则放大后照片的面积是多少平方厘米？

A photo with a length of 6 cm and a width of 4 cm is enlarged proportionally on the computer. The length of the enlarged photo is 15 cm. What is the area of the enlarged photo in square centimeters?

<gadget id="calculator">6 / 4</gadget>
<output>3/2 = around 1.5</output>
<gadget id="calculator">15 / (3/2)</gadget>
<output>10</output>
<gadget id="calculator">15 * 10</gadget>
<output>150</output>
<result>150</result>


两地相距120千米，甲、乙两人骑自行车同时从两地相对出发，甲车每小时行14千米，经过4小时后与乙车相遇，乙车每小时行多少千米？

The distance between the two places is 120 kilometers. Two people, A and B, start from opposite places on bicycles at the same time. Car A travels 14 kilometers per hour. After 4 hours, it meets car B. How many kilometers does car B travel per hour?

<gadget id="calculator">120 / 4</gadget>
<output>30</output>
<gadget id="calculator">30 - 14</gadget>
<output>16</output>
<result>16</result>


一个长方形的球场，长是40米，宽是30米，小强沿着球场走一圈，他一共要走多少米

A rectangular court is 40 meters long and 30 meters wide. If Xiaoqiang walks around the court, how many meters will he walk in total?

<gadget id="calculator">40 + 30</gadget>
<output>70</output>
<gadget id="calculator">70 * 2</gadget>
<output>140</output>
<result>140</result>


从甲地到乙地快车要6小时，慢车要8小时，如果两车同时从甲，乙两地相对开出，可在距中点35千米处相遇，甲，乙两地的距离为多少千米．

It takes 6 hours to travel from A to B by express train, and 8 hours by slow train. If the two trains leave from A and B at the same time, they can meet at a distance of 35 kilometers from the midpoint. What is the distance between A and B? km.

<gadget id="calculator">4 + 3</gadget>
<output>7</output>
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>
<gadget id="calculator">(4/7) - (3/7)</gadget>
<output>1/7 = around 0.142857</output>
<gadget id="calculator">2 / (1/7)</gadget>
<output>14</output>
<gadget id="calculator">35 * 14</gadget>
<output>490</output>
<result>490</result>


有47位小朋友，老师要给每人发一支红笔和一支蓝笔．商店中每种笔都是5支一包或3支一包，不能打开包零售.5支一包的红笔61元，蓝笔70元，3支一包的红笔40元，蓝笔47元．则老师买所需的笔最少要花几元？

There are 47 children, and the teacher will give each of them a red pen and a blue pen. Each type of pen in the store is in a pack of 5 or 3 pens, and the package cannot be opened for retail sale. A pack of 5 red pens is 61 yuan, a blue pen is 70 yuan, a pack of 3 red pens is 40 yuan, and a blue pen is 47 yuan. Yuan. So what is the minimum cost for the teacher to buy the required pen?

<gadget id="calculator">61 * 7</gadget>
<output>427</output>
<gadget id="calculator">40 * 4</gadget>
<output>160</output>
<gadget id="calculator">427 + 160</gadget>
<output>587</output>
<gadget id="calculator">70 * 9</gadget>
<output>630</output>
<gadget id="calculator">47 * 1</gadget>
<output>47</output>
<gadget id="calculator">630 + 47</gadget>
<output>677</output>
<gadget id="calculator">587 + 677</gadget>
<output>1_264</output>
<result>1_264</result>


六年级有女生70人，比男生人数的(8/9)少2人，六年级共有学生多少人？

There are 70 girls in the sixth grade, which is 2 fewer than the number of boys (8/9). How many students are there in the sixth grade?

<gadget id="calculator">70 + 2</gadget>
<output>72</output>
<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>
<gadget id="calculator">72 / (8/9)</gadget>
<output>81</output>
<result>81</result>


个位是5的倍数的最小三位数与2的最小倍数的积是多少．

What is the product of the smallest three-digit number whose ones digit is a multiple of 5 and the smallest multiple of 2?

<gadget id="calculator">100 * 2</gadget>
<output>200</output>
<result>200</result>


一本书，第一天看了20页，第二天看了(1/4)，两天共看了45页．这本书共有多少页？

book, I read 20 pages on the first day and (1/4) on the second day, and read a total of 45 pages in two days. How many pages does this book have?

<gadget id="calculator">45 - 20</gadget>
<output>25</output>
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">25 / (1/4)</gadget>
<output>100</output>
<result>100</result>


甲数的(2/3)和乙数的(3/4)相等，甲数比乙数多多少

(2/3) of number A is equal to (3/4) of number B, how much more number A is than number B

<gadget id="calculator">9 - 8</gadget>
<output>1</output>
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>
<result>1/8 = around 0.125</result>


一根铁丝可以围成一个长4米，宽2米的长方形，调皮的小宝把这个长方形拉成了正方形，这个正方形的边长是多少米．

A piece of iron wire can form a rectangle with a length of 4 meters and a width of 2 meters. The naughty Xiaobao stretches this rectangle into a square. What is the side length of this square in meters?

<gadget id="calculator">4 + 2</gadget>
<output>6</output>
<gadget id="calculator">6 * 2</gadget>
<output>12</output>
<gadget id="calculator">12 / 4</gadget>
<output>3</output>
<result>3</result>


商店进行优惠活动，买5瓶可乐送1瓶，60名同学，每人买一瓶可乐，只需买多少瓶可乐就可以了．

The store has a promotional activity, buy 5 bottles of Coke and get 1 bottle free, 60 students, each buy a bottle of Coke, only need to buy as many bottles of Coke.

<gadget id="calculator">5 + 1</gadget>
<output>6</output>
<gadget id="calculator">60 / 6</gadget>
<output>10</output>
<gadget id="calculator">60 - 10</gadget>
<output>50</output>
<result>50</result>


一种服装每套标价300元，应库存积压减价出售，第一次打八折出售，每套仍能获得利润20%，店家售出这样的服装100套后，对剩下的8套服装再打8折出售．当服装全部售完后，商店共获利多少？

A kind of clothing is priced at 300 yuan per set. It should be sold at a reduced price when the inventory is backlogged. The first time it is sold at a 20% discount, each set can still earn 20% of the profit. After the store sells 100 sets of such clothing, the remaining 8 sets of clothing Another 20% off sale. How much profit does the store make when all the clothes are sold out?


已知一个比的前项和比值分别是0.3和(4/5)，则这个比的后项是多少．

Knowing that the former term and ratio of a ratio are 0.3 and (4/5) respectively, what is the latter term of this ratio.

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">0.3 / (4/5)</gadget>
<output>0.375</output>
<result>0.375</result>


一张长方形纸，长16厘米，宽12厘米，把它剪成边长是4厘米的正方形，一共可以剪成多少张这样的正方形？

A piece of rectangular paper with a length of 16 cm and a width of 12 cm is cut into a square with a side length of 4 cm. How many such squares can be cut in total?

<gadget id="calculator">4 * 4</gadget>
<output>16</output>
<gadget id="calculator">12 / 16</gadget>
<output>3/4 = around 0.75</output>
<gadget id="calculator">16 * (3/4)</gadget>
<output>12</output>
<result>12</result>


某校有男生420人，比女生少20%，这个学校共有学生多少人？

There are 420 boys in a certain school, which is 20% less than girls. How many students are there in this school?

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">420 / (4/5)</gadget>
<output>525</output>
<gadget id="calculator">525 + 420</gadget>
<output>945</output>
<result>945</result>


小林的平均步长是0.7米，他从家到学校往返一趟走了820步，他家离学校多少米．

Xiaolin's average step length is 0.7 meters. He walked 820 steps from home to school and back. How many meters away is his home from school?

<gadget id="calculator">820 / 2</gadget>
<output>410</output>
<gadget id="calculator">0.7 * 410</gadget>
<output>287</output>
<result>287</result>


甲乙两地，一辆客车和一辆货车同时从两地相向而行，经过4小时相遇，相遇后两车继续行驶3小时，客车到达乙地，货车离甲地还有6千米．甲乙两地相距多少千米？

A passenger car and a truck drive toward each other at two places at the same time. After 4 hours, they meet each other. After meeting, the two cars continue to drive for 3 hours. The bus arrives at B, and the truck is still 6 kilometers away from A. How many kilometers are there between A and B?

<gadget id="calculator">6 + 0</gadget>
<output>6</output>
<gadget id="calculator">4 - 3</gadget>
<output>1</output>
<gadget id="calculator">6 / 1</gadget>
<output>6</output>
<gadget id="calculator">6 * 4</gadget>
<output>24</output>
<result>24</result>


菜场运来250千克的土豆，上午卖出120千克，下午卖出100千克，卖出多少千克？列式为多少

250 kilograms of potatoes are shipped from the market, 120 kilograms are sold in the morning, and 100 kilograms are sold in the afternoon. How many kilograms are sold? What is the column

<gadget id="calculator">120 + 100</gadget>
<output>220</output>
<result>220</result>


一根铁丝长(1/5)米，另一根比它短(1/6)米，另一根长多少米．

One wire is (1/5) meter long and the other is (1/6) meter shorter than it. What is the length of the other wire?

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">(1/5) - (1/6)</gadget>
<output>1/30 = around 0.033333</output>
<result>1/30 = around 0.033333</result>


有6袋糖每袋6颗，把这些糖平均分给9个小朋友，每个可以分到多少颗？

There are 6 bags of candy with 6 pieces in each bag. Distribute these candies to 9 children on average. How many pieces can each get?

<gadget id="calculator">6 * 6</gadget>
<output>36</output>
<gadget id="calculator">36 / 9</gadget>
<output>4</output>
<result>4</result>


一个长方形的周长与一个边长12厘米的正方形的周长相等，这个长方形的长是14厘米，它的宽是多少厘米？

The perimeter of a rectangle is equal to the perimeter of a square with a side length of 12 cm. The length of this rectangle is 14 cm. What is its width in cm?

<gadget id="calculator">4 / 2</gadget>
<output>2</output>
<gadget id="calculator">12 * 2</gadget>
<output>24</output>
<gadget id="calculator">24 - 14</gadget>
<output>10</output>
<result>10</result>


春节的时间，爸爸带小红去商场买新衣服，买一件上衣比一条裤子贵35元，一条裤子的价格是85元．小红买一套衣服需要多少钱？

During the Spring Festival, my father took Xiaohong to the mall to buy new clothes. A jacket was 35 yuan more expensive than a pair of trousers, and the price of a pair of trousers was 85 yuan. How much does Xiaohong need to buy a set of clothes?

<gadget id="calculator">85 + 35 + 85</gadget>
<output>205</output>
<result>205</result>


用4，5，6，三个数组成一个三位数，组成的数是3，5的公倍数的可能性是多少．

Using 4, 5, 6, three numbers to form a three-digit number, what is the possibility that the number formed is a common multiple of 3, 5?

<gadget id="calculator">3 * 2 * 1</gadget>
<output>6</output>
<gadget id="calculator">2 / 6</gadget>
<output>1/3 = around 0.333333</output>
<result>1/3 = around 0.333333</result>


一块长方形铁皮，长40厘米，宽30厘米，从四个角剪去边长为6厘米的正方形，然后做成一个无盖的盒子，这个盒子的体积是多少立方厘米．

A rectangular iron sheet, 40 cm long and 30 cm wide, is cut off from the four corners to make a square with a side length of 6 cm, and then made into a box without a lid. What is the volume of this box in cubic centimeters?

<gadget id="calculator">6 * 2</gadget>
<output>12</output>
<gadget id="calculator">40 - 12</gadget>
<output>28</output>
<gadget id="calculator">30 - 12</gadget>
<output>18</output>
<gadget id="calculator">28 * 18 * 6</gadget>
<output>3_024</output>
<result>3_024</result>


一个书架有上、下两层，上层书的本数是下层的(3/5)，现在从下层取出45本书放入上层后，这时上层书的本数是下层的(5/7)．这个书架上共有书多少本？

A bookshelf has upper and lower floors, and the number of books on the upper floor is the number of books on the lower floor (3/5). Now after taking 45 books from the lower floor and putting them on the upper floor, the number of books on the upper floor is the number of books on the lower floor (5/7). How many books are there in total on this bookshelf?

<gadget id="calculator">5 + 7</gadget>
<output>12</output>
<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>
<gadget id="calculator">3 + 5</gadget>
<output>8</output>
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>
<gadget id="calculator">(5/12) - (3/8)</gadget>
<output>1/24 = around 0.041667</output>
<gadget id="calculator">45 / (1/24)</gadget>
<output>1_080</output>
<result>1_080</result>


学校为贫困地区捐书，三年级捐了238本，比四年级少96本．一共捐了多少本？

The school donated books to poverty-stricken areas. The third grade donated 238 books, 96 less than the fourth grade. How many copies did you donate in total?

<gadget id="calculator">238 + 96 + 238</gadget>
<output>572</output>
<result>572</result>


在一个盛满水的底面直径是8分米、高是6分米的圆柱形容器中，垂直放入一根底面半径是2分米、高是7分米的圆柱形铁棒，溢出水的体积是多少升．

In a cylindrical container with a bottom diameter of 8 decimeters and a height of 6 decimeters filled with water, a cylindrical iron rod with a bottom radius of 2 decimeters and a height of 7 decimeters is placed vertically, and the water overflows What is the volume in liters.

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>
<gadget id="calculator">3.14 * 4 * 6</gadget>
<output>75.36</output>
<result>75.36</result>


今年小明和爸爸两人的年龄和是43岁，妈妈32岁，到公元多少年他们一家三口的平均年龄是36岁．

This year, the combined age of Xiaoming and his father is 43 years old, and his mother is 32 years old. The average age of their family of three is 36 years old.

<gadget id="calculator">36 * 3</gadget>
<output>108</output>
<gadget id="calculator">108 - 43 - 32</gadget>
<output>33</output>
<gadget id="calculator">2 + 1</gadget>
<output>3</output>
<gadget id="calculator">33 / 3</gadget>
<output>11</output>
<gadget id="calculator">2_012 + 11</gadget>
<output>2_023</output>
<result>2_023</result>


<gadget id="calculator">16 * 76.1</gadget>
<output>1_217.6</output>
<gadget id="calculator">41 * 7.61</gadget>
<output>312.01</output>
<gadget id="calculator">201 * 2.39</gadget>
<output>480.39</output>
<gadget id="calculator">1_217.6 + 312.01 + 480.39</gadget>
<output>2_010</output>
<result>2_010</result>


一盒牛奶1.5千克，正好倒4杯，平均每杯装多少千克牛奶？

A carton of milk weighs 1.5 kilograms, and exactly 4 cups are poured, how many kilograms of milk is contained in each cup on average?

<gadget id="calculator">1.5 / 4</gadget>
<output>0.375</output>
<result>0.375</result>


铺一个房间的地面，需要360块面积是0.09平方米的方砖．如果改用边长是0.2米的方砖铺，需要多少块？

To lay the floor of a room, 360 square bricks with an area of 0.09 square meters are needed. If you use square bricks with a side length of 0.2 meters instead, how many pieces are needed?

<gadget id="calculator">0.2 * 0.2</gadget>
<output>0.04</output>
<gadget id="calculator">0.09 / 0.04</gadget>
<output>2.25</output>
<gadget id="calculator">360 * 2.25</gadget>
<output>810</output>
<result>810</result>


一个圆的半径从2cm增加到3cm，则周长增加了多少cm．

If the radius of a circle increases from 2 cm to 3 cm, how much does the circumference increase in cm?

<gadget id="calculator">3 - 2</gadget>
<output>1</output>
<gadget id="calculator">3.14 * 2 * 1</gadget>
<output>6.28</output>
<result>6.28</result>


一个数的最大因数和最小倍数相加等于62，这个数是多少．

The sum of the largest factor and the smallest multiple of a number equals 62. What is the number?

<gadget id="calculator">62 / 2</gadget>
<output>31</output>
<result>31</result>


一个圆形花坛，直径是10米，要在它的周围铺一条宽1米的小路，小路的面积是多少平方米．

A circular flower bed has a diameter of 10 meters. A path with a width of 1 meter should be paved around it. What is the area of the path in square meters?

<gadget id="calculator">10 / 2</gadget>
<output>5</output>
<gadget id="calculator">5 + 1</gadget>
<output>6</output>
<gadget id="calculator">6 ** 2</gadget>
<output>36</output>
<gadget id="calculator">5 ** 2</gadget>
<output>25</output>
<gadget id="calculator">36 - 25</gadget>
<output>11</output>
<gadget id="calculator">3.14 * 11</gadget>
<output>34.54</output>
<result>34.54</result>


一个物体从高空下落，经过4秒落地．已知第一秒下落的距离是4.9米，以后每一秒下落的距离都比前一秒多9.8米．这个物体在下落前距地面多少米．

An object falls from a height and lands after 4 seconds. It is known that the falling distance in the first second is 4.9 meters, and the falling distance in each subsequent second is 9.8 meters more than the previous second. How far was the object from the ground before it fell?

<gadget id="calculator">4.9 + 9.8</gadget>
<output>14.7</output>
<gadget id="calculator">9.8 * 2</gadget>
<output>19.6</output>
<gadget id="calculator">4.9 + 19.6</gadget>
<output>24.5</output>
<gadget id="calculator">9.8 * 3</gadget>
<output>29.4</output>
<gadget id="calculator">4.9 + 29.4</gadget>
<output>34.3</output>
<gadget id="calculator">4.9 + 14.7 + 24.5 + 34.3</gadget>
<output>78.4</output>
<result>78.4</result>


商店有一批洗衣机．卖出8台后，剩下的是卖出的3倍．商店原来有多少台洗衣机？

The store has a batch of washing machines. After selling 8 units, the rest is 3 times the amount sold. How many washing machines did the store originally have?

<gadget id="calculator">8 * 3</gadget>
<output>24</output>
<gadget id="calculator">24 + 8</gadget>
<output>32</output>
<result>32</result>


一个正方体纸盒，棱长是30厘米．做这个纸盒至少需要硬纸板多少厘米．

A cube is a box with a side length of 30 cm. At least how many centimeters of cardboard is needed to make this carton.

<gadget id="calculator">30 * 30 * 6</gadget>
<output>5_400</output>
<result>5_400</result>


一个圆形花坛，直径为4米，沿花坛的周围修一条1米宽的小路．这条小路的面积是多少平方米？

A circular flower bed is 4 meters in diameter, and a 1-meter-wide path is built around the flower bed. What is the area of this path in square meters?

<gadget id="calculator">4 / 2</gadget>
<output>2</output>
<gadget id="calculator">2 + 1</gadget>
<output>3</output>
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>
<gadget id="calculator">9 - 4</gadget>
<output>5</output>
<gadget id="calculator">3.14 * 5</gadget>
<output>15.7</output>
<result>15.7</result>


小红看《童话故事》3天看了15页，全书一共45页．小红如果保持这样的看书速度，还要看多少天才能全部看完？

Xiaohong read "Fairy Tales" and read 15 pages in 3 days. The book has 45 pages in total. If Xiaohong keeps reading at this speed, how many days will it take to finish reading all of them?

<gadget id="calculator">45 - 15</gadget>
<output>30</output>
<gadget id="calculator">15 / 3</gadget>
<output>5</output>
<gadget id="calculator">30 / 5</gadget>
<output>6</output>
<result>6</result>


要使口.08/5的商大于1，那么口里应填不小于多少的数．

To make the quotient of mouth.08/5 greater than 1, then the mouth should be filled with a number not less than that.


把7枝红笔和3枝蓝铅笔放在一个包里，让你每次从中摸出1枝再放回去，这样摸20次，摸也红铅笔的次数大约占总次数的多少．

Put 7 red pens and 3 blue pencils in a bag, and let you take out 1 of them each time and put it back. If you touch 20 times in this way, the number of touches with red pencils accounts for approximately the total number of times.

<gadget id="calculator">14 + 6</gadget>
<output>20</output>
<gadget id="calculator">14 / 20</gadget>
<output>7/10 = around 0.7</output>
<result>7/10 = around 0.7</result>


某车间原有工人25人，其中女工有18人，后来又调进多少名男工，这时女工人数正好占车间人数的(3/5)．

There were originally 25 workers in a certain workshop, of which 18 were female workers, how many male workers were transferred later, and the number of female workers just accounted for (3/5) of the total number of workers in the workshop.

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>
<gadget id="calculator">18 / (3/5)</gadget>
<output>30</output>
<gadget id="calculator">30 - 25</gadget>
<output>5</output>
<result>5</result>


一只狗的体重是15千克，一头猪的体重是狗体重的8倍，一头牛的体重是猪体重的3倍，一头牛的体重是多少千克？

A dog weighs 15 kilograms, a pig weighs eight times the dog's weight, and a cow weighs three times the pig's weight, how many kilograms does a cow weigh?

<gadget id="calculator">15 * 8 * 3</gadget>
<output>360</output>
<result>360</result>


两个数的积是9.87，如果一个因数扩大10倍，另一个因数不变，积是多少

The product of two numbers is 9.87, if one factor is enlarged by 10 times and the other factor remains unchanged, what is the product

<gadget id="calculator">9.87 * 10</gadget>
<output>98.7</output>
<result>98.7</result>


一个长方形的周长是30米，已知长是宽的2倍，则长是多少？

The perimeter of a rectangle is 30 meters, and it is known that the length is twice the width, what is the length?

<gadget id="calculator">30 / 2</gadget>
<output>15</output>
<gadget id="calculator">2 + 1</gadget>
<output>3</output>
<gadget id="calculator">15 / 3</gadget>
<output>5</output>
<gadget id="calculator">5 * 2</gadget>
<output>10</output>
<result>10</result>


一个三角形与一个平行四边形的面积相等，底也相等．三角形的高是1.6分米，平行四边形的高是多少分米．

A triangle and a parallelogram have the same area and the same base. The height of the triangle is 1.6 decimeters, what is the height of the parallelogram in decimeters.

<gadget id="calculator">1.6 / 2</gadget>
<output>0.8</output>
<result>0.8</result>


育才小学计划建一座长105米，宽31米的教学楼．该教学楼的占地面积是多少？

Yucai Primary School plans to build a teaching building with a length of 105 meters and a width of 31 meters. What is the floor area of the teaching building?

<gadget id="calculator">105 * 31</gadget>
<output>3_255</output>
<result>3_255</result>


修一条路，已修了全长的(1/7)，如果再修20米，那么已修的与未修的比是1：5，这条路总长多少米？

To build a road, the full length (1/7) has been built. If another 20 meters are built, then the ratio of the built to the unbuilt is 1:5. How many meters is the total length of this road?

<gadget id="calculator">1 + 5</gadget>
<output>6</output>
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>
<gadget id="calculator">(1/6) - (1/7)</gadget>
<output>1/42 = around 0.02381</output>
<gadget id="calculator">20 / (1/42)</gadget>
<output>840</output>
<result>840</result>


甲乙两人在银行都有存款，已知甲存款160元．若甲取出存款的75%，乙取出存款的(1/3)，则甲与乙余款数的比是1：2．乙原来在银行存了多少元？

Both A and B have deposits in the bank, and it is known that A's deposit is 160 yuan. If A withdraws 75% of the deposit and B withdraws (1/3) of the deposit, then the ratio of A and B's balance is 1:2. How much did B deposit in the bank?

<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>
<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>
<gadget id="calculator">2 / 1 / 1 / (2/3)</gadget>
<output>3</output>
<gadget id="calculator">160 * (1/4) * 3</gadget>
<output>120</output>
<result>120</result>


五、六年级给灾区捐款，共捐款7200元，五、六年级捐款数的比为4；5，六年级捐款多少元？

The fifth and sixth grades donated 7,200 yuan to the disaster area, and the ratio of the donations of the fifth and sixth grades was 4; how much did the fifth and sixth grades donate?

<gadget id="calculator">4 + 5</gadget>
<output>9</output>
<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>
<gadget id="calculator">7_200 * (5/9)</gadget>
<output>4_000</output>
<result>4_000</result>


小明买了六瓶饮料，共付7.8元，喝完全部饮料退瓶时，知道每个空瓶的价钱比瓶中饮料的价钱少1.1元，那么小明应收到退款多少元．

Xiao Ming bought six bottles of drinks and paid a total of 7.8 yuan. When he drank all the drinks and returned the bottles, he knew that the price of each empty bottle was 1.1 yuan less than the price of the drink in the bottle, so how much should Xiao Ming receive as a refund.

<gadget id="calculator">7.8 / 6</gadget>
<output>1.3</output>
<gadget id="calculator">1.3 - 1.1</gadget>
<output>0.2</output>
<gadget id="calculator">0.2 / 2</gadget>
<output>0.1</output>
<gadget id="calculator">0.1 * 6</gadget>
<output>0.6</output>
<result>0.6</result>


一个直角三角形的面积是6平方厘米，两条直角边相差1厘米，它的斜边的长是多少．

The area of a right triangle is 6 square centimeters, and the difference between the two sides is 1 centimeter, what is the length of its hypotenuse?


把3公顷平均分成7份，每份是多少公顷

Divide 3 hectares into 7 equal parts, how many hectares are each

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>
<result>3/7 = around 0.428571</result>


五年级一班有45人，若将一班人数的(1/15)调入二班，则两班人数相等，五年级二班原有多少人？

There are 45 students in the first class of the fifth grade. If 1/15 of the number of people in the first class is transferred to the second class, the number of the two classes will be equal. How many people are there in the second class of the fifth grade?

<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>
<gadget id="calculator">(1/15) * 2</gadget>
<output>2/15 = around 0.133333</output>
<gadget id="calculator">1 - (2/15)</gadget>
<output>13/15 = around 0.866667</output>
<gadget id="calculator">45 * (13/15)</gadget>
<output>39</output>
<result>39</result>


给含盐率是10%的75克盐水中加入5克盐，全部溶解后，盐水的含盐率是多少．

If 5 grams of salt are added to 75 grams of salt water with a salt content of 10%, what is the salt content of the salt water after all of it is dissolved?

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">75 * (1/10)</gadget>
<output>15/2 = around 7.5</output>
<gadget id="calculator">(15/2) + 5</gadget>
<output>25/2 = around 12.5</output>
<gadget id="calculator">75 + 5</gadget>
<output>80</output>
<gadget id="calculator">(25/2) / 80</gadget>
<output>5/32 = around 0.15625</output>
<result>5/32 = around 0.15625</result>


一个圆柱体容器中盛满14.13升水，把一个与它等底等高的铁圆锥放入水中，容器中还有多少升水．

cylindrical container is filled with 14.13 liters of water, and an iron cone with the same height as its bottom is put into the water, how many liters of water are there in the container?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>
<gadget id="calculator">14.13 * (2/3)</gadget>
<output>9.42</output>
<result>9.42</result>


甲、乙、丙、丁四人去买电视机，甲带的钱是另外三人所带总钱数的一半，乙带的钱是另外三人所带总钱数的(1/3)，丙带的钱是另外三人所带总钱数的(1/4)，丁带了910元，四人所带钱的总数是多少元．

Four people, A, B, C, and D, go to buy a TV set. A brings half of the total money brought by the other three people, and B takes half of the total money brought by the other three people (1/3). The money brought by C is 1/4 of the total money brought by the other three people, and the money brought by D is 910 yuan. What is the total amount of money brought by the four people?

<gadget id="calculator">1 + 2</gadget>
<output>3</output>
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">3 + 1</gadget>
<output>4</output>
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1 + 4</gadget>
<output>5</output>
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">1 - (1/3) - (1/4) - (1/5)</gadget>
<output>13/60 = around 0.216667</output>
<gadget id="calculator">910 / (13/60)</gadget>
<output>4_200</output>
<result>4_200</result>


圆的半径由2厘米增加到5厘米，面积增加了多少π厘米．

If the radius of a circle increases from 2 cm to 5 cm, the area increases by π cm.

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>
<gadget id="calculator">25 - 4</gadget>
<output>21</output>
<result>21</result>


学校买了200棵树苗，老师栽种了10%，余下的按3：4：5分配给四、五、六年级，六年级分到多少棵树？

The school bought 200 saplings, the teacher planted 10%, and the rest were allocated to the fourth, fifth, and sixth grades according to the ratio of 3:4:5. How many trees were allocated to the sixth grade?

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>
<gadget id="calculator">200 * (9/10)</gadget>
<output>180</output>
<gadget id="calculator">3 + 4 + 5</gadget>
<output>12</output>
<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>
<gadget id="calculator">180 * (5/12)</gadget>
<output>75</output>
<result>75</result>


从北京到G城的特别快车在2000年10月前需用12.6小时后提速20%．问；提速后，北京到G城的特别快车需要多少小时？

The special express train from Beijing to City G took 12.6 hours before October 2000, and then the speed was increased by 20%. Question: After the speed is increased, how long does it take for the special express train from Beijing to City G?

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>
<gadget id="calculator">12.6 / (6/5)</gadget>
<output>10.5</output>
<result>10.5</result>


一个圆锥形沙堆的底面周长是15.7米，高是3米，这个沙堆的体积是多少立方米？

A cone-shaped sand pile has a base circumference of 15.7 meters and a height of 3 meters. What is the volume of the sand pile in cubic meters?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">15.7 / 3.14 / 2</gadget>
<output>2.5</output>
<gadget id="calculator">2.5 ** 2</gadget>
<output>6.25</output>
<gadget id="calculator">(1/3) * 3.14 * 6.25 * 3</gadget>
<output>19.625</output>
<result>19.625</result>


用面积为0.36平方米的方砖来铺一间会议室，需要192块，如果改用0.64平方米的方砖来铺，需要多少块？

It takes 192 pieces to pave a meeting room with square bricks with an area of 0.36 square meters. If it is replaced with square bricks with an area of 0.64 square meters, how many pieces are needed?

<gadget id="calculator">0.36 * 192</gadget>
<output>69.12</output>
<gadget id="calculator">69.12 / 0.64</gadget>
<output>108</output>
<result>108</result>


一段长方体木料，长、宽、高分别是8厘米、6厘米和10厘米．现在要把它加工成一个最大的圆柱形模型，这个圆柱形模型的体积是多少？

piece of cuboid wood has length, width, and height of 8 cm, 6 cm, and 10 cm, respectively. Now we want to process it into the largest cylindrical model, what is the volume of this cylindrical model?

<gadget id="calculator">8 / 2</gadget>
<output>4</output>
<gadget id="calculator">4 ** 2</gadget>
<output>16</output>
<gadget id="calculator">3.14 * 16 * 6</gadget>
<output>301.44</output>
<result>301.44</result>


张月今年12岁，比她妈妈小27岁．她妈妈今年多少岁？

Zhang Yue is 12 years old this year, 27 years younger than her mother. How old is her mother?

<gadget id="calculator">12 + 27</gadget>
<output>39</output>
<result>39</result>


甲、乙、丙三个数的平均数是27，加上丁后，平均数是30，丁是多少．

The average of the three numbers A, B, and C is 27. After adding D, the average is 30. What is D?

<gadget id="calculator">30 * 4</gadget>
<output>120</output>
<gadget id="calculator">27 * 3</gadget>
<output>81</output>
<gadget id="calculator">120 - 81</gadget>
<output>39</output>
<result>39</result>


用边长是6分米的方砖铺一间教室的地面，需要125块，如果改用边长是1米的方砖铺这间教室地面，需要多少块？

It takes 125 bricks to pave the floor of a classroom with square bricks with a side length of 6 decimeters. If the square bricks with a side length of 1 meter are used to pave the floor of this classroom, how many bricks are needed?

<gadget id="calculator">0.6 * 0.6 * 125</gadget>
<output>45</output>
<gadget id="calculator">45 / 1</gadget>
<output>45</output>
<result>45</result>


It is stipulated that a*b=(ak+b)/ab, and 5*6=6*5. Find the value of 2*1-1*2.

<gadget id="calculator">2 * 1</gadget>
<output>2</output>
<gadget id="calculator">1 * 2</gadget>
<output>2</output>
<gadget id="calculator">2 - 2</gadget>
<output>0</output>
<result>0</result>


某段高速公路全长约为265千米，高速公路管理站为了方便司机和乘客，每隔5千米设一块指示牌，起点和终点都不设，该高速公路两旁一共要设多少块指示牌？

The total length of a certain expressway is about 265 kilometers. In order to facilitate drivers and passengers, the expressway management station sets up signs every 5 kilometers. The starting point and the end point are not set. How many signs should be set up on both sides of the expressway? ?

<gadget id="calculator">265 / 5</gadget>
<output>53</output>
<gadget id="calculator">53 - 1</gadget>
<output>52</output>
<gadget id="calculator">52 * 2</gadget>
<output>104</output>
<result>104</result>


一辆货车与一辆小轿车分别从甲、乙两地同时相对开出，5小时后相遇．它们速度分别是65千米/时和95千米/时，甲、乙两地相距多少千米？

A truck and a car depart from places A and B respectively at the same time and meet each other 5 hours later. Their speeds are 65 km/h and 95 km/h respectively, how many kilometers are the distance between A and B?

<gadget id="calculator">65 + 95</gadget>
<output>160</output>
<gadget id="calculator">160 * 5</gadget>
<output>800</output>
<result>800</result>


到小玲家要走72级台阶，每上一层楼，要走18级台阶．小玲家住多少楼．

There are 72 steps to go to Xiaoling's house, and 18 steps to go up each floor. How many floors does Xiaoling live in?

<gadget id="calculator">72 / 18</gadget>
<output>4</output>
<gadget id="calculator">4 + 1</gadget>
<output>5</output>
<result>5</result>


在一个比例尺是1：5000000的地图上，量得两地之间的距离是6厘米，两地之间的实际距离是多少千米．

On a map with a scale of 1:5000000, the measured distance between the two places is 6 cm. What is the actual distance in kilometers between the two places?

<gadget id="calculator">1 / 5_000_000</gadget>
<output>1/5_000_000 = around 0</output>
<gadget id="calculator">6 / (1/5_000_000) / 100_000</gadget>
<output>300</output>
<result>300</result>


在一次数学竞赛中，获一等奖的有3人，相当于获二等奖的(1/3)，获二等奖的人数相当于获三等奖人数的(3/7)，获三等奖的有多少人？

In a mathematics competition, there are 3 people who won the first prize, which is equivalent to (1/3) who won the second prize, and the number who won the second prize is equivalent to (3/7) the number who won the third prize. How many people are waiting for the prize?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>
<gadget id="calculator">3 / (1/3) / (3/7)</gadget>
<output>21</output>
<result>21</result>


一节美术课40分钟，学生欣赏用了这节课的(1/5)，老师讲解用了这节课的(3/10)，剩余时间学生自主创作．学生自主创作用了这节课的几分之几？

An art class lasts for 40 minutes, the students use (1/5) of this class for appreciation, the teacher uses (3/10) of this class for explanation, and the rest of the time students create independently. How much of the lesson did the students use for their own creation?

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>
<gadget id="calculator">1 - (1/5) - (3/10)</gadget>
<output>1/2 = around 0.5</output>
<result>1/2 = around 0.5</result>


菜市场有黄瓜150千克，西红柿重量和黄瓜重量的比是5：3，西红柿重量是多少千克？

There are 150 kilograms of cucumbers in the vegetable market. The ratio of the weight of tomatoes to the weight of cucumbers is 5:3. How much is the weight of tomatoes?

<gadget id="calculator">150 / 3</gadget>
<output>50</output>
<gadget id="calculator">50 * 5</gadget>
<output>250</output>
<result>250</result>


水果店有苹果400千克，香蕉的质量是苹果的5倍，水果店有香蕉多少千克．

There are 400 kilograms of apples in the fruit shop, and the mass of bananas is 5 times that of the apples. How many kilograms of bananas are there in the fruit shop?

<gadget id="calculator">400 * 5</gadget>
<output>2_000</output>
<result>2_000</result>


<gadget id="calculator">37 / 36</gadget>
<output>37/36 = around 1.027778</output>
<gadget id="calculator">720 * (37/36)</gadget>
<output>740</output>
<result>740</result>


一根木料，张大叔一共锯了6次，每段长都是20厘米，这根木料一共长多少厘米．

Uncle Zhang sawed a piece of wood 6 times in total, and each section was 20 centimeters long. How many centimeters is the total length of this piece of wood?

<gadget id="calculator">6 + 1</gadget>
<output>7</output>
<gadget id="calculator">20 * 7</gadget>
<output>140</output>
<result>140</result>


幼儿园买来120张彩色纸，买来的白纸比彩色纸多(1/3)，两种纸一共有多少张．

The kindergarten bought 120 sheets of colored paper, and the white paper bought was more than the colored paper (1/3). How many sheets of the two kinds of paper are there in total?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>
<gadget id="calculator">120 * (4/3)</gadget>
<output>160</output>
<gadget id="calculator">160 + 120</gadget>
<output>280</output>
<result>280</result>


一种汽车去年每辆售价16万元，今年每辆售价13.6元，今年比去年每辆降价百分之几？

A car sold for 160,000 yuan last year and 13.6 yuan this year. How much is the price cut this year compared to last year?

<gadget id="calculator">16 - 13.6</gadget>
<output>2.4</output>
<gadget id="calculator">2.4 / 16</gadget>
<output>0.15</output>
<result>0.15</result>


一条渡船载重是1吨，三年级小朋友准备乘这条船过河，每次最多能乘多少人名学生．

The load of a ferry boat is 1 ton. The third-grade children are going to take this boat to cross the river. How many students can they take each time?

<gadget id="calculator">1_000 / 25</gadget>
<output>40</output>
<gadget id="calculator">1 * 40</gadget>
<output>40</output>
<result>40</result>


一张边长21分米的正方形铁皮，在它的四个角各剪去一个小正方形铁皮：焊接成一个无盖的正方体水箱，这个水箱的容积是多少升？

A square iron sheet with a side length of 21 decimeters, cut off a small square iron sheet at each of its four corners: welded into a cubic water tank without a cover, how many liters is the volume of this water tank?


一个三角形的面积是48平方厘米，一条高是12厘米，与这条高对应的底是多少厘米．

The area of a triangle is 48 square centimeters, the height of one side is 12 cm, what is the base corresponding to the height in centimeters?

<gadget id="calculator">2 / 12</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">48 * (1/6)</gadget>
<output>8</output>
<result>8</result>


一头牛的体重是506千克，一头大象的体重等于8头牛的体重，这头大象的体重是多少千克？

The weight of a cow is 506 kg, and the weight of an elephant is equal to the weight of 8 cows. How many kilograms does the elephant weigh?

<gadget id="calculator">506 * 8</gadget>
<output>4_048</output>
<result>4_048</result>


一个平行四边形相邻的两条边的长度是3厘米和4厘米，它的周长是多少厘米．

If the lengths of two adjacent sides of a parallelogram are 3 cm and 4 cm, what is its perimeter in cm?

<gadget id="calculator">3 + 3 + 4 + 4</gadget>
<output>14</output>
<result>14</result>


把一块棱长10厘米的正方体铁块，锻造成宽5厘米，高10厘米的长方体铁条，这个铁条长是多少？(用方程解)

A square iron block with a side length of 10 cm is forged into a rectangular iron bar with a width of 5 cm and a height of 10 cm. What is the length of the iron bar? (solution by equation)

<gadget id="calculator">10 * 10 * 10</gadget>
<output>1_000</output>
<gadget id="calculator">5 * 10</gadget>
<output>50</output>
<gadget id="calculator">1_000 / 50</gadget>
<output>20</output>
<result>20</result>


(5/7)的分子加上10，要使分数的大小不变，分母应加上多少．

Add 10 to the numerator of (5/7), how much should be added to the denominator to keep the size of the fraction unchanged.


小敏家离学校585米，离少年宫910米，他从家走到学校要用9分钟，照这样的速度，他从家走到少年宫要几分钟？

Xiao Min's home is 585 meters away from the school and 910 meters away from the Children's Palace. It takes him 9 minutes to walk from home to school. At this speed, how many minutes will it take him to walk from home to the Children's Palace?

<gadget id="calculator">585 / 9</gadget>
<output>65</output>
<gadget id="calculator">910 / 65</gadget>
<output>14</output>
<result>14</result>


假日小队男生组收集废电池180节，女生组比男生组少收集(1/9)．女生组收集废电池多少节？

The male group of the holiday team collected 180 waste batteries, and the female group collected less than the male group (1/9). How many sections of waste batteries did the girl group collect?

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>
<gadget id="calculator">1 - (1/9)</gadget>
<output>8/9 = around 0.888889</output>
<gadget id="calculator">180 * (8/9)</gadget>
<output>160</output>
<result>160</result>


甲、乙两辆汽车分别从南京和徐州同时出发，相向而行，甲车每小时行65千米，乙车每小时行67千米，2小时后两车相距132千米，徐州和南京之间的公路长多少千米？

Two cars, A and B, set off from Nanjing and Xuzhou at the same time and drive toward each other. Car A travels 65 kilometers per hour, and car B travels 67 kilometers per hour. After 2 hours, the distance between the two cars is 132 kilometers. How many kilometers is the road between them?

<gadget id="calculator">65 + 67</gadget>
<output>132</output>
<gadget id="calculator">132 * 2</gadget>
<output>264</output>
<gadget id="calculator">264 + 132</gadget>
<output>396</output>
<result>396</result>


在长1.2dm，宽7.2dm的长方形纸中，剪直径是2cm的圆最多可以剪出多少个．

In a rectangular paper with a length of 1.2dm and a width of 7.2dm, how many circles with a diameter of 2cm can be cut at most?

<gadget id="calculator">1.2 * 10</gadget>
<output>12</output>
<gadget id="calculator">12 / 2</gadget>
<output>6</output>
<gadget id="calculator">7.2 * 10</gadget>
<output>72</output>
<gadget id="calculator">72 / 2</gadget>
<output>36</output>
<gadget id="calculator">6 * 36</gadget>
<output>216</output>
<result>216</result>


有一个近似于圆锥的碎石堆，底面直径是4米，高是0.6米．如果每立方米碎石重2吨，这堆碎石重多少吨？

There is a gravel pile similar to a cone, with a bottom diameter of 4 meters and a height of 0.6 meters. If each cubic meter of gravel weighs 2 tons, how many tons does this pile of gravel weigh?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">4 / 2</gadget>
<output>2</output>
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>
<gadget id="calculator">(1/3) * 3.14 * 4 * 0.6 * 2</gadget>
<output>5.024</output>
<result>5.024</result>


小明看一本书，已看了全书的(7/15)，剩下的比已看的多出全书的几分之几？

Xiao Ming reads a book, and he has read the whole book (7/15), what percentage of the whole book is left over from what he has read?

<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>
<gadget id="calculator">1 - (7/15)</gadget>
<output>8/15 = around 0.533333</output>
<gadget id="calculator">(8/15) - (7/15)</gadget>
<output>1/15 = around 0.066667</output>
<result>1/15 = around 0.066667</result>


一个三角形的高和一个平行四边形的高相等，面积也相等，若平行四边形的底是3.8厘米，则三角形的底是多少厘米．

The height of a triangle is equal to the height and area of a parallelogram. If the base of the parallelogram is 3.8 cm, what is the base of the triangle in cm?

<gadget id="calculator">3.8 * 2</gadget>
<output>7.6</output>
<result>7.6</result>


第一层有图书42本．如果从第二层拿3本图书放到第一层，则第一层与第二层的图书数相同．第二层有图书多少本？

There are 42 books on the first floor. If 3 books are taken from the second floor and placed on the first floor, the number of books on the first floor and the second floor is the same. How many books are there on the second floor?

<gadget id="calculator">42 + 3 + 3</gadget>
<output>48</output>
<result>48</result>


一项工程，已经完成了(3/5)，还要98天才能完成任务，已经做了多少天？

A project has been completed (3/5), and it will take 98 days to complete the task. How many days have you been working on it?

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>
<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>
<gadget id="calculator">98 / (2/5)</gadget>
<output>245</output>
<result>245</result>


罗老师以八五折的优惠买了一辆摩托车，实际付了3740元．这辆摩托车的原价是多少元？

Teacher Luo bought a motorcycle with a 15% discount, and actually paid 3,740 yuan. How much is the original price of this motorcycle?

<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>
<gadget id="calculator">3_740 / (17/20)</gadget>
<output>4_400</output>
<result>4_400</result>


甲数的(1/4)相当于乙数的(1/3)，乙数是12，甲数是多少．

(1/4) of the number A is equivalent to (1/3) of the number B. The number B is 12. What is the number A?

<gadget id="calculator">12 / 3</gadget>
<output>4</output>
<gadget id="calculator">4 * 4</gadget>
<output>16</output>
<result>16</result>


小东和小荣同时从甲地出发到乙地，小东每分钟行50米，小荣每分钟行60米，小荣到达乙地后立即返回，若两人从出发到相遇用了10分钟，则甲、乙两地相距多少米．

Xiaodong and Xiaorong set off from place A to place B at the same time. Xiaodong walks 50 meters per minute, Xiaorong walks 60 meters per minute, and Xiaorong returns immediately after arriving at place B. If it takes 10 minutes for the two to meet each other , then how many meters is the distance between A and B?

<gadget id="calculator">50 + 60</gadget>
<output>110</output>
<gadget id="calculator">10 / 2</gadget>
<output>5</output>
<gadget id="calculator">110 * 5</gadget>
<output>550</output>
<result>550</result>


水由氢氧按1：8化合成，45kg水中有氢多少kg．

Water is synthesized from hydrogen and oxygen at a ratio of 1:8, how many kg of hydrogen are in 45kg of water?

<gadget id="calculator">1 + 8</gadget>
<output>9</output>
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>
<gadget id="calculator">45 * (1/9)</gadget>
<output>5</output>
<result>5</result>


小人国有2011个小矮人，他们中的每个人不是戴红帽子就是戴蓝帽子．小矮人戴红帽子时说真话，戴蓝帽子时可以说假话；并且他们随时可以更换自己帽子的颜色．某一天，他们恰好每两人都见了一次面，并且都说对方戴蓝帽子．那么一天他们总共最少改变了多少次帽子的颜色．

There are 2011 dwarves in the Lilliputian, and each of them either wears a red hat or a blue hat. The dwarves tell the truth when they wear a red hat, but they can tell lies when they wear a blue hat; and they can change the color of their hats at any time. One day, each of them happened to meet once, and they both said that the other was wearing a blue hat. So how many times did they change the color of the hat at least in one day?

<gadget id="calculator">2_011 - 2</gadget>
<output>2_009</output>
<result>2_009</result>


三1班订了50份《小学生学习报》，多少，订《小学生学习报》共需要多少元？

Class 3 and 1 ordered 50 copies of "Primary School Students Studying Newspaper", how much, how much does it cost to order "Primary School Students Studying Newspaper"?


一个长方形的面积是210平方厘米，它的长和宽的厘米数是两个连续的自然数，这个长方形的周长是多少厘米．

The area of a rectangle is 210 square centimeters, its length and width in centimeters are two consecutive natural numbers, what is the perimeter of the rectangle in centimeters.

<gadget id="calculator">14 + 15</gadget>
<output>29</output>
<gadget id="calculator">29 * 2</gadget>
<output>58</output>
<result>58</result>


<gadget id="calculator">48.1 - 46.7</gadget>
<output>1.4</output>
<gadget id="calculator">2.8 / 1.4</gadget>
<output>2</output>
<gadget id="calculator">13.6 * 2</gadget>
<output>27.2</output>
<result>27.2</result>


一批苹果，原计划每天销售0.5吨，12天卖完，实际每天比原计划多卖20%，这样可以提前多少天卖完？(用比例知识解)

batch of apples was originally planned to sell 0.5 tons per day and sold out in 12 days, but the actual daily sales were 20% more than the original plan. How many days earlier can they be sold out? (Solution with proportional knowledge)

<gadget id="calculator">0.5 * 12</gadget>
<output>6</output>
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">0.5 * (1/5) * 12</gadget>
<output>1.2</output>
<gadget id="calculator">1.2 - 6</gadget>
<output>-4.8</output>
<gadget id="calculator">6 + (-4.8)</gadget>
<output>1.2</output>
<gadget id="calculator">0.5 * (1/5)</gadget>
<output>0.1</output>
<gadget id="calculator">0.5 + 0.1</gadget>
<output>0.6</output>
<gadget id="calculator">1.2 / 0.6</gadget>
<output>2</output>
<result>2</result>


珠穆朗玛峰的海拔约为8844米，比日本富士山海拔的2倍还多1296米．日本富士山的海拔约为多少米？

The altitude of Mount Everest is about 8844 meters, 1296 meters more than twice the altitude of Mount Fuji in Japan. What is the altitude of Mount Fuji in Japan?

<gadget id="calculator">8_844 - 1_296</gadget>
<output>7_548</output>
<gadget id="calculator">7_548 / 2</gadget>
<output>3_774</output>
<result>3_774</result>


有两个高相等的圆柱，底面半径的比是2：5，第一个圆柱的体积是360立方厘米，那么第二个圆柱的体积是多少立方厘米？

There are two cylinders of equal height, the ratio of the base radii is 2:5, the volume of the first cylinder is 360 cubic centimeters, what is the volume of the second cylinder in cubic centimeters?

<gadget id="calculator">2 ** 2</gadget>
<output>4</output>
<gadget id="calculator">5 ** 2</gadget>
<output>25</output>
<gadget id="calculator">4 / 25</gadget>
<output>4/25 = around 0.16</output>
<gadget id="calculator">360 / (4/25)</gadget>
<output>2_250</output>
<result>2_250</result>


一只山雀8天大约能吃720只害虫，照这样计算，一只山雀一个月大约能吃多少只害虫？(一个月按30天计算．)

A chickadee can eat about 720 pests in 8 days. According to this calculation, how many pests can a chickadee eat in a month? (A month is calculated as 30 days.)

<gadget id="calculator">720 / 8</gadget>
<output>90</output>
<gadget id="calculator">90 * 30</gadget>
<output>2_700</output>
<result>2_700</result>


□*(54/6)=72，在□填上合适的数是多少

□*(54/6)=72, what is the correct number to fill in □

<gadget id="calculator">54 / 6</gadget>
<output>9</output>
<gadget id="calculator">72 / 9</gadget>
<output>8</output>
<result>8</result>


一个底面直径是10厘米圆柱形玻璃容器里装了水．把一块浸没在水中的铁块从这个容器中取出后，水面下降了2厘米．这块铁块的体积是多少？

A cylindrical glass container with a base diameter of 10 cm is filled with water. When a piece of iron submerged in water is taken out of the container, the water level drops by 2 cm. What is the volume of this block of iron?

<gadget id="calculator">10 / 2</gadget>
<output>5</output>
<gadget id="calculator">5 ** 2</gadget>
<output>25</output>
<gadget id="calculator">3.14 * 25 * 2</gadget>
<output>157</output>
<result>157</result>


若长方体的三个侧面的面积分别是6，8，12，则长方体的体积是多少．

If the areas of the three sides of a cuboid are 6, 8, and 12 respectively, what is the volume of the cuboid?

<gadget id="calculator">4 * 3 * 2</gadget>
<output>24</output>
<result>24</result>


高山滑雪的总路程是4.8km，丽丽每小时能滑3.2km，已经滑了1.25小时，她离终点还有多少千米？

The total distance of alpine skiing is 4.8km. Lili can skate 3.2km per hour. She has been skating for 1.25 hours. How many kilometers is she away from the finish line?

<gadget id="calculator">3.2 * 1.25</gadget>
<output>4</output>
<gadget id="calculator">4.8 - 4</gadget>
<output>0.8</output>
<result>0.8</result>