六年级学生开展课外活动，美术小组有25人，美术小组的人数比航模小组多(1/4)．航模小组有多少人？(用方程解题)

The sixth grade students carry out extracurricular activities. There are 25 people in the art group, and the number of the art group is more than that of the model group (1/4). How many people are there in the model aircraft team? (Solving problems with equations)

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>
<gadget id="calculator">25 / (5/4)</gadget>
<output>20</output>
<result>20</result>


一个圆柱形大桶，底面直径4分米，高5分米．这个大桶能装水多少升？

A cylindrical vat with a bottom diameter of 4 decimeters and a height of 5 decimeters. How many liters of water can this bucket hold?

<gadget id="calculator">4 / 2</gadget>
<output>2</output>
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>
<gadget id="calculator">3.14 * 4 * 5</gadget>
<output>62.8</output>
<result>62.8</result>


一条水渠的横截面是长方形，长4.5米，面积是13.5平方米，长方形的宽是多少？

The cross section of a canal is a rectangle with a length of 4.5 meters and an area of 13.5 square meters. What is the width of the rectangle?

<gadget id="calculator">13.5 / 4.5</gadget>
<output>3</output>
<result>3</result>


数A和数B的最小公倍数是36，最大公约数是6，若数A是12，那么数B是多少．

The least common multiple of the number A and the number B is 36, and the greatest common divisor is 6. If the number A is 12, what is the number B?

<gadget id="calculator">36 / 12</gadget>
<output>3</output>
<gadget id="calculator">3 * 6</gadget>
<output>18</output>
<result>18</result>


一种MP3，现在的售价是330元，比去年降低了170元，降低了百分之几？

A kind of MP3, the current price is 330 yuan, which is 170 yuan lower than last year, and how much is it lower?

<gadget id="calculator">330 + 170</gadget>
<output>500</output>
<gadget id="calculator">170 / 500</gadget>
<output>17/50 = around 0.34</output>
<result>17/50 = around 0.34</result>


甲从A地往B地，7小时可走完全程，乙从B地往A地，9小时可走完全程，两人分别从两地同时出发相向而行，经几小时两人在途中相遇？

A can travel from point A to point B in 7 hours, and B can travel from point B to point A in 9 hours. The two start from the two places at the same time and walk towards each other. After a few hours, they meet each other on the way ?

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>
<gadget id="calculator">(1/7) + (1/9)</gadget>
<output>16/63 = around 0.253968</output>
<gadget id="calculator">1 / (16/63)</gadget>
<output>63/16 = around 3.9375</output>
<result>63/16 = around 3.9375</result>


定义⊕(A、B、C、D)=A*4+B*3+C*2+D*1，那么⊕(2、0、1、3)=多少．

<gadget id="calculator">4 * 2</gadget>
<output>8</output>
<gadget id="calculator">3 * 0</gadget>
<output>0</output>
<gadget id="calculator">2 * 1</gadget>
<output>2</output>
<gadget id="calculator">3 * 1</gadget>
<output>3</output>
<gadget id="calculator">8 + 0 + 2 + 3</gadget>
<output>13</output>
<result>13</result>


某人下午6点多外出时，看手表上两指针的夹角为110°，下午7点前回家时发现两指针夹角仍是110°，他外出的时间是多少分钟．

When a person goes out at 6:00 p.m., he sees that the angle between the two hands on his watch is 110°. When he returns home before 7:00 p.m., he finds that the angle between the two hands is still 110°. How many minutes did he go out for?

<gadget id="calculator">110 + 110</gadget>
<output>220</output>
<gadget id="calculator">6 - 0.5</gadget>
<output>5.5</output>
<gadget id="calculator">220 / 5.5</gadget>
<output>40</output>
<result>40</result>


一个圆柱，原来的高是5cm，把它的高增加1cm后，表面积增加了6.28cm**2，则原来圆柱体的体积是多少？

The original height of a cylinder is 5cm. After increasing its height by 1cm, the surface area increases by 6.28cm**2. What is the volume of the original cylinder?

<gadget id="calculator">6.28 / 1 / 3.14 / 2</gadget>
<output>1</output>
<gadget id="calculator">1 ** 2</gadget>
<output>1</output>
<gadget id="calculator">3.14 * 1 * 5</gadget>
<output>15.7</output>
<result>15.7</result>


化简一个分数时，用2约了三次，用3约了一次，得(2/3)．原来的分数是多少？

When simplifying a fraction, use 2 for three times, use 3 for one time, and get (2/3). What was the original score?

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>
<result>2/3 = around 0.666667</result>


在一个减法算式中，被减数、减数、差三个数的和是300，被减数是多少

In a subtraction formula, the sum of the minuend, the subtrahend and the difference is 300, what is the minuend

<gadget id="calculator">300 / 2</gadget>
<output>150</output>
<result>150</result>


一个数的(2/7)和20的40%相等，这个数是多少．

(2/7) of a number is equal to 40% of 20, what is this number?

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>
<gadget id="calculator">(2/5) / (2/7)</gadget>
<output>7/5 = around 1.4</output>
<gadget id="calculator">20 * (7/5)</gadget>
<output>28</output>
<result>28</result>


一个自选商店门口的装饰牌是等腰梯形．它的上底是16米，下底是22米，高是3米．油漆这块装牌需要多少千克油漆？(每平方米油漆需用油漆2千克)

The decorative sign at the entrance of an optional store is an isosceles trapezoid. Its upper base is 16 meters, its lower base is 22 meters, and its height is 3 meters. How many kilograms of paint do you need to paint this board? (2 kg of paint is required per square meter of paint)

<gadget id="calculator">16 + 22</gadget>
<output>38</output>
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>
<gadget id="calculator">38 * (3/2) * 2</gadget>
<output>114</output>
<result>114</result>


在棱长为9厘米的立方体钢块的每个面的中心打一个直穿钢块的方孔，方孔的边长为3厘米．若每立方厘米的钢重7.8克，求钢块的重量．

In the center of each face of a cubic steel block with a side length of 9 cm, a square hole is punched straight through the steel block, and the side length of the square hole is 3 cm. If steel weighs 7.8 grams per cubic centimeter, find the weight of the steel block.

<gadget id="calculator">9 * 9 * 9</gadget>
<output>729</output>
<gadget id="calculator">3 * 3 * 9 * 3</gadget>
<output>243</output>
<gadget id="calculator">729 - 243</gadget>
<output>486</output>
<gadget id="calculator">3 * 3 * 3 * 2</gadget>
<output>54</output>
<gadget id="calculator">486 + 54</gadget>
<output>540</output>
<gadget id="calculator">540 * 7.8</gadget>
<output>4_212</output>
<result>4_212</result>


每千克梨子5元，小红买了49千克梨子，小红大约用了多少元？

It costs 5 yuan per kilogram of pears. Xiaohong bought 49 kilograms of pears. How much did Xiaohong spend?

<gadget id="calculator">5 * 49</gadget>
<output>245</output>
<result>245</result>


学校美术组有24人，合唱组的人数比美术组的4倍少6人，这两个兴趣小组共有多少人？

There are 24 people in the art group of the school, and 6 people in the chorus group are 4 times less than the art group. How many people are there in these two interest groups?

<gadget id="calculator">24 * 4</gadget>
<output>96</output>
<gadget id="calculator">96 - 6</gadget>
<output>90</output>
<gadget id="calculator">24 + 90</gadget>
<output>114</output>
<result>114</result>


食堂运来一袋大米，第一天吃了(1/9)，以后7天分别吃了当天现有大米的(1/8)、(1/7)、(1/6)…(1/3)、(1/2)，8天后还剩5千克．这袋大米原有多少千克．

A bag of rice was shipped from the cafeteria, and I ate (1/9) on the first day, and then ate (1/8), (1/7), (1/6) of the existing rice in the next 7 days...(1/ 3), (1/2), 5 kg left after 8 days. How many kilograms is this bag of rice originally?

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>
<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</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">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 / 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">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 / 7</gadget>
<output>1/7 = around 0.142857</output>
<gadget id="calculator">1 - (1/7)</gadget>
<output>6/7 = around 0.857143</output>
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>
<gadget id="calculator">1 - (1/8)</gadget>
<output>7/8 = around 0.875</output>
<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">5 / (1/2) / (2/3) / (3/4) / (4/5) / (5/6) / (6/7) / (7/8) / (8/9)</gadget>
<output>45</output>
<result>45</result>


张老师想买一台6400元的电脑，他现在有存款5760元，如果每月存80元，需要存款几个月才能够买到电脑？

Teacher Zhang wants to buy a computer worth 6,400 yuan. He has a savings of 5,760 yuan. If he saves 80 yuan a month, how many months will he need to save to buy a computer?

<gadget id="calculator">6_400 - 5_760</gadget>
<output>640</output>
<gadget id="calculator">640 / 80</gadget>
<output>8</output>
<result>8</result>


阳光小学六年级有学生若干名，如果学生中至少有3人的生日是同一天(按闰年计算)，那么六年级至少有多少名学生．

There are several students in the sixth grade of Sunshine Primary School. If at least three of the students have the same birthday (calculated according to leap year), then how many students are there in the sixth grade?

<gadget id="calculator">366 * 2</gadget>
<output>732</output>
<gadget id="calculator">732 + 1</gadget>
<output>733</output>
<result>733</result>


妈妈去杭州批发8套服装，上衣每件72元，裤子每条48元，共要多少钱？

My mother went to Hangzhou to wholesale 8 sets of clothes, each jacket was 72 yuan, and each pair of trousers was 48 yuan. How much does it cost?

<gadget id="calculator">72 + 48</gadget>
<output>120</output>
<gadget id="calculator">120 * 8</gadget>
<output>960</output>
<result>960</result>


<gadget id="calculator">2_007 * 2_009</gadget>
<output>4_032_063</output>
<gadget id="calculator">2_008 + 4_032_063</gadget>
<output>4_034_071</output>
<gadget id="calculator">2_008 * 2_009</gadget>
<output>4_034_072</output>
<gadget id="calculator">4_034_072 - 1</gadget>
<output>4_034_071</output>
<gadget id="calculator">4_034_071 / 4_034_071</gadget>
<output>1</output>
<result>1</result>


一个西瓜的重量等于4个菠萝的重量，2个菠萝的重量等于3串葡萄重量，一串葡萄的重量等于3个苹果重量，一个西瓜的重量等于多少个苹果的重量．

The weight of a watermelon is equal to the weight of 4 pineapples, the weight of 2 pineapples is equal to the weight of 3 bunches of grapes, the weight of a bunch of grapes is equal to the weight of 3 apples, and the weight of a watermelon is equal to the weight of how many apples.

<gadget id="calculator">6 * 3</gadget>
<output>18</output>
<result>18</result>


服装厂生产一批童装，第一天生产了总数的(1/5)，第二天生产了总数的(1/4)，两天一共生产了90套，这批童装有多少套？

A garment factory produces a batch of children's clothing. On the first day, it produces (1/5) of the total number, and on the second day it produces (1/4) of the total number. A total of 90 sets are produced in two days. How many sets of this batch of children's clothing are there?

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">(1/5) + (1/4)</gadget>
<output>9/20 = around 0.45</output>
<gadget id="calculator">90 / (9/20)</gadget>
<output>200</output>
<result>200</result>


暑假里小利坚持每天写9个大字，七月份和八月份一共能写多少个大字？

During the summer vacation, Xiaoli insisted on writing 9 big characters every day. How many big characters can he write in total in July and August?

<gadget id="calculator">31 + 31</gadget>
<output>62</output>
<gadget id="calculator">62 * 9</gadget>
<output>558</output>
<result>558</result>


<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>
<gadget id="calculator">2 + 4</gadget>
<output>6</output>
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">2 + 4 + 6</gadget>
<output>12</output>
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>
<gadget id="calculator">2 + 4 + 6 + 8</gadget>
<output>20</output>
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>
<gadget id="calculator">2 + 4 + 6 + 8 + 10</gadget>
<output>30</output>
<gadget id="calculator">1 / 30</gadget>
<output>1/30 = around 0.033333</output>
<gadget id="calculator">2 + 4 + 6 + 8 + 10 + 12</gadget>
<output>42</output>
<gadget id="calculator">1 / 42</gadget>
<output>1/42 = around 0.02381</output>
<gadget id="calculator">(1/2) + (1/6) + (1/12) + (1/20) + (1/30) + (1/42)</gadget>
<output>6/7 = around 0.857143</output>
<result>6/7 = around 0.857143</result>


<gadget id="calculator">17 / 28</gadget>
<output>17/28 = around 0.607143</output>
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>
<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>
<gadget id="calculator">(2/7) + (5/8)</gadget>
<output>51/56 = around 0.910714</output>
<gadget id="calculator">(17/28) / (51/56)</gadget>
<output>2/3 = around 0.666667</output>
<result>2/3 = around 0.666667</result>


一辆新能源混合动力汽车行驶50千米可节省汽油4.5升．照这样计算，这辆汽车行驶600千米，可以节省汽油多少升？(用比例解)

A new energy hybrid car can save 4.5 liters of gasoline when driving 50 kilometers. According to this calculation, how many liters of gasoline can be saved when the car travels 600 kilometers? (Solve with ratio)

<gadget id="calculator">600 * 4.5</gadget>
<output>2_700</output>
<gadget id="calculator">2_700 / 50</gadget>
<output>54</output>
<result>54</result>


四年级一班五个小组，每组8人，一共为灾区小朋友捐款120元．平均每人捐款多少元？

There are five groups in one class of the fourth grade, with 8 people in each group, and a total of 120 yuan was donated to the children in the disaster area. How much is the average donation per person?

<gadget id="calculator">8 * 5</gadget>
<output>40</output>
<gadget id="calculator">120 / 40</gadget>
<output>3</output>
<result>3</result>


一个梯形的上底是2dm，下底是4dm，高是6dm，它的面积是多少dm**2．

The upper base of a trapezoid is 2dm, the lower base is 4dm, and the height is 6dm. What is its area dm**2.

<gadget id="calculator">2 + 4</gadget>
<output>6</output>
<gadget id="calculator">6 / 2</gadget>
<output>3</output>
<gadget id="calculator">6 * 3</gadget>
<output>18</output>
<result>18</result>


一种电视机现在打八折出售．小新算了一下，如果能再降价到原价的75%，就又可以少花150元钱．这种电视机原价是多少元？

TV set is on sale at 20% off. Xiaoxin calculated, if the price can be reduced to 75% of the original price, it can save another 150 yuan. How much is the original price of this TV?

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>
<gadget id="calculator">(4/5) - (3/4)</gadget>
<output>1/20 = around 0.05</output>
<gadget id="calculator">150 / (1/20)</gadget>
<output>3_000</output>
<result>3_000</result>


除数是7，商是25，余数是5，被除数是多少．

The divisor is 7, the quotient is 25, the remainder is 5, what is the dividend.

<gadget id="calculator">25 * 7</gadget>
<output>175</output>
<gadget id="calculator">175 + 5</gadget>
<output>180</output>
<result>180</result>


<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1.5 * (1/4)</gadget>
<output>0.375</output>
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>
<gadget id="calculator">0.375 / (1/2)</gadget>
<output>0.75</output>
<result>0.75</result>


学校利用星期天组织六年级学生举行野营活动，要求学生自愿报名参加，六年级共有学生144人，有(3/4)的女生报名参加，有(4/5)的男生报名参加，结果没有参加活动的女生和男生人数一样多．六年级总有女生多少人．

The school organized sixth grade students to hold camping activities on Sunday, requiring students to sign up voluntarily. There were 144 students in the sixth grade. There were (3/4) girls who signed up, and (4/5) boys who signed up, but they did not participate in the activity. There are as many girls as boys. How many girls are there in sixth grade?

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">144 * (4/5)</gadget>
<output>576/5 = around 115.2</output>
<gadget id="calculator">144 - (576/5)</gadget>
<output>144/5 = around 28.8</output>
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>
<gadget id="calculator">1 - (4/5) - (3/4)</gadget>
<output>-11/20 = around -0.55</output>
<gadget id="calculator">1 + (-11/20)</gadget>
<output>9/20 = around 0.45</output>
<gadget id="calculator">(144/5) / (9/20)</gadget>
<output>64</output>
<result>64</result>


甲数是120，比乙数多25%，乙数是多少．

The number A is 120, which is 25% more than the number B, what is the number B?

<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>
<gadget id="calculator">120 / (5/4)</gadget>
<output>96</output>
<result>96</result>


<gadget id="calculator">3.6 - 0.9</gadget>
<output>2.7</output>
<gadget id="calculator">2.7 / 3</gadget>
<output>0.9</output>
<result>0.9</result>


要修一条路，前三天共修135米，照这样计算，再修5天，可以完成．这条路多少米？

To build a road, a total of 135 meters will be built in the first three days. According to this calculation, it will be completed in another 5 days. How many meters is this road?

<gadget id="calculator">135 / 3</gadget>
<output>45</output>
<gadget id="calculator">3 + 5</gadget>
<output>8</output>
<gadget id="calculator">45 * 8</gadget>
<output>360</output>
<result>360</result>


一个圆的周长为314分米，这个圆的面积是多少？

The circumference of a circle is 314 decimeters, what is the area of the circle?

<gadget id="calculator">314 / 3.14 / 2</gadget>
<output>50</output>
<gadget id="calculator">50 ** 2</gadget>
<output>2_500</output>
<gadget id="calculator">2_500 * 3.14</gadget>
<output>7_850</output>
<result>7_850</result>


甲乙两车分别从两城相对开出，甲车每小时行33千米，乙车每小时行28千米．甲车开出2小时后，乙车出发，经3小时相遇．两城相距多少千米？

Two cars, A and B, drive from two cities opposite each other. Car A travels 33 kilometers per hour, and car B travels 28 kilometers per hour. 2 hours after car A leaves, car B starts and meets after 3 hours. How many kilometers are the two cities apart?

<gadget id="calculator">33 * 2</gadget>
<output>66</output>
<gadget id="calculator">33 + 28</gadget>
<output>61</output>
<gadget id="calculator">61 * 3</gadget>
<output>183</output>
<gadget id="calculator">66 + 183</gadget>
<output>249</output>
<result>249</result>


一块长方形的地，长16米，宽是长的(5/8)，这块地的面积是多少平方米？

rectangular piece of land is 16 meters long and long (5/8) wide. What is the area of the land in square meters?

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>
<gadget id="calculator">16 * (5/8)</gadget>
<output>10</output>
<gadget id="calculator">16 * 10</gadget>
<output>160</output>
<result>160</result>


3.9的5倍比6.4与4的商大多少？

How much is 5 times of 3.9 greater than the quotient of 6.4 and 4?

<gadget id="calculator">3.9 * 5</gadget>
<output>19.5</output>
<gadget id="calculator">6.4 / 4</gadget>
<output>1.6</output>
<gadget id="calculator">19.5 - 1.6</gadget>
<output>17.9</output>
<result>17.9</result>


在比例尺是1：2000的平面图上，量得一块长方形试验田长5.5厘米，宽3厘米．这块试验田的实际面积是多少平方米？

On a plan with a scale of 1:2000, measure a rectangular test field with a length of 5.5 cm and a width of 3 cm. What is the actual area of the test field in square meters?

<gadget id="calculator">1 / 2_000</gadget>
<output>1/2_000 = around 0.0005</output>
<gadget id="calculator">5.5 / (1/2_000) / 100</gadget>
<output>110</output>
<gadget id="calculator">3 / (1/2_000) / 100</gadget>
<output>60</output>
<gadget id="calculator">110 * 60 * 10</gadget>
<output>66_000</output>
<result>66_000</result>


长方形的长是5厘米，周长是a厘米，那么宽是多少厘米．

If the length of the rectangle is 5 cm and the perimeter is a cm, what is the width in cm?

<gadget id="calculator">2 - 5</gadget>
<output>-3</output>
<result>-3</result>


小胖集了258张邮票，小丁丁集了336张邮票，小巧集了236张邮票，他们三人共收集了多少张邮票？

Xiao Pang collected 258 stamps, Xiao Ding Ding collected 336 stamps, and Xiao Qiao collected 236 stamps. How many stamps did the three of them collect in total?

<gadget id="calculator">258 + 336 + 236</gadget>
<output>830</output>
<result>830</result>


用一根铁丝围成长9厘米、宽7厘米的长方形，如果把这根铁丝改围成一个正方形，这个正方形的面积是多少平方厘米？

A rectangle with a length of 9 cm and a width of 7 cm is surrounded by an iron wire. If the wire is reshaped into a square, what is the area of the square in square centimeters?

<gadget id="calculator">9 + 7</gadget>
<output>16</output>
<gadget id="calculator">2 / 4</gadget>
<output>1/2 = around 0.5</output>
<gadget id="calculator">16 * (1/2)</gadget>
<output>8</output>
<gadget id="calculator">8 * 8</gadget>
<output>64</output>
<result>64</result>


一辆汽车从甲地开往乙地，每小时行30千米，开出5小时后，离乙地还有全程的(1/3)，甲地到乙地公路长多少千米？

A car travels 30 kilometers per hour from place A to place B. After driving for 5 hours, it is still 1/3 of the way from place B. How long is the road from place A to place B in kilometers?

<gadget id="calculator">30 * 5</gadget>
<output>150</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">150 / (2/3)</gadget>
<output>225</output>
<result>225</result>


16.8与1.5的积减去5.2后，再除4，商是多少？

After subtracting 5.2 from the product of 16.8 and 1.5, and then dividing by 4, what is the quotient?

<gadget id="calculator">16.8 * 1.5</gadget>
<output>25.2</output>
<gadget id="calculator">25.2 - 5.2</gadget>
<output>20</output>
<gadget id="calculator">4 / 20</gadget>
<output>1/5 = around 0.2</output>
<result>1/5 = around 0.2</result>


把一个自然数的所有的约数都写出来，然后在这些约数中任意找两个相加，得到若干个不同的和，其中最小的和是4，最大的和是140．那么，这个自然数是多少．

Write down all the divisors of a natural number, and then add any two of these divisors to get several different sums, the smallest sum is 4, and the largest sum is 140. So, what is this natural number?

<gadget id="calculator">4 - 1</gadget>
<output>3</output>
<gadget id="calculator">35 * 3</gadget>
<output>105</output>
<result>105</result>


蓝鲸每小时游35千米，海啄的速度比蓝鲸快(3/7)．海啄每小时游多少千米？

The blue whale swims 35 kilometers per hour, and the speed of the sea peck is faster than the blue whale (3/7). How many kilometers does the sea peck swim per hour?

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>
<gadget id="calculator">35 * (3/7)</gadget>
<output>15</output>
<gadget id="calculator">35 + 15</gadget>
<output>50</output>
<result>50</result>


把一个横截面为正方形的长方体木块，削成一个最大的圆锥．已知圆锥的底面直径为2cm，高为9cm，那么削去部分的体积是多少？

Cut a cuboid block with a square cross section into the largest cone. It is known that the diameter of the base of the cone is 2cm and the height is 9cm, so what is the volume of the cut-off part?

<gadget id="calculator">2 * 2 * 9</gadget>
<output>36</output>
<gadget id="calculator">2 / 2</gadget>
<output>1</output>
<gadget id="calculator">1 ** 2</gadget>
<output>1</output>
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">3.14 * 1 * 9 * (1/3)</gadget>
<output>9.42</output>
<gadget id="calculator">36 - 9.42</gadget>
<output>26.58</output>
<result>26.58</result>


一列火车长180米，每秒行30米，这列火车通过480米长的大桥，需要多少秒．

A train is 180 meters long and travels 30 meters per second. How many seconds does it take for the train to pass through a 480-meter-long bridge?

<gadget id="calculator">180 + 480</gadget>
<output>660</output>
<gadget id="calculator">660 / 30</gadget>
<output>22</output>
<result>22</result>


正方形的一组对边中，一条增加16厘米，一条减少11厘米，这样就变成了梯形，这时梯形的下底是上底的4倍．梯形的面积是多少平方厘米？

Among a set of opposite sides of a square, one increases by 16 cm and the other decreases by 11 cm, thus becoming a trapezoid, and the lower base of the trapezoid is four times the upper base. What is the area of the trapezoid in square centimeters?

<gadget id="calculator">20 - 11</gadget>
<output>9</output>
<gadget id="calculator">9 + 20 + 16</gadget>
<output>45</output>
<gadget id="calculator">20 / 2</gadget>
<output>10</output>
<gadget id="calculator">45 * 10</gadget>
<output>450</output>
<result>450</result>


多思玩具店要生产4000个玩具，已经生产了12天，每天生产150个，剩下的要求10天完成，则剩下的每天生产多少个零件才能按时完成．

Dosi Toys Store needs to produce 4,000 toys. It has been produced for 12 days, and 150 toys are produced every day. The remaining parts are required to be completed in 10 days. How many parts can be produced every day to complete the remaining parts on time?

<gadget id="calculator">150 * 12</gadget>
<output>1_800</output>
<gadget id="calculator">4_000 - 1_800</gadget>
<output>2_200</output>
<gadget id="calculator">2_200 / 10</gadget>
<output>220</output>
<result>220</result>


李叔叔开车从甲地去乙地送货，去的时候用了3个小时，行车速度是40千米/时，返回只用了2个小时，返回时的速度是多少？

Uncle Li drove from place A to place B to deliver goods. It took 3 hours to go there at a speed of 40 km/h, and it only took 2 hours to return. What was the speed when he returned?

<gadget id="calculator">40 / 2</gadget>
<output>20</output>
<gadget id="calculator">3 * 20</gadget>
<output>60</output>
<result>60</result>


王老师每天工作时间是一天的(1/3)，他每天工作多少小时．

Teacher Wang's daily working hours are 1/3 of a day, how many hours does he work every day?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">24 * (1/3)</gadget>
<output>8</output>
<result>8</result>


一种录音机原来每台售价250元，现在每台200元，现在每台降价百分之几？

A tape recorder used to cost 250 yuan each, but now it costs 200 yuan each. How much is the price cut now?

<gadget id="calculator">250 - 200</gadget>
<output>50</output>
<gadget id="calculator">50 / 250</gadget>
<output>1/5 = around 0.2</output>
<result>1/5 = around 0.2</result>


农场买回8捆树苗，每捆12棵，一共买回多少棵树苗？

The farm bought back 8 bundles of saplings, 12 in each bundle, how many saplings were bought back in total?

<gadget id="calculator">12 * 8</gadget>
<output>96</output>
<result>96</result>


妈妈准备给我卧室的四壁和顶棚贴墙纸，卧室长3.6m，宽3.5m，高3m，门窗面积是7m**2．至少需要准备多少平方米的墙纸？

My mother is going to put wallpaper on the walls and ceiling of my bedroom. The length of the bedroom is 3.6m, the width is 3.5m, the height is 3m, and the area of doors and windows is 7m**2. At least how many square meters of wallpaper do you need to prepare?

<gadget id="calculator">13.2 - 7</gadget>
<output>6.2</output>
<gadget id="calculator">12.6 + 21 + 6.2</gadget>
<output>39.8</output>
<result>39.8</result>


一个等腰三角形的底角是80°，它的顶角是多少．

The base angle of an isosceles triangle is 80°, what is the apex angle?

<gadget id="calculator">80 * 2</gadget>
<output>160</output>
<gadget id="calculator">180 - 160</gadget>
<output>20</output>
<result>20</result>


如果把5*(a+8)算成了5a+8，结果少算了多少？

If 5*(a+8) is calculated as 5a+8, how much less is the result?


海侨糖厂2008年二月份计划生产780吨红糖，实际每天生产29吨，照这样的计算，这个月超产多少吨？

Haiqiao Sugar Factory plans to produce 780 tons of brown sugar in February 2008, but actually produces 29 tons per day. According to this calculation, how many tons is the overproduction this month?

<gadget id="calculator">29 * 29</gadget>
<output>841</output>
<gadget id="calculator">841 - 780</gadget>
<output>61</output>
<result>61</result>


食品店原来有400千克瓜子，卖出310千克，又运进来3袋，每袋80千克，这个商店现有瓜子多少千克？

The grocery store originally had 400 kilograms of melon seeds, sold 310 kilograms, and brought in 3 bags of 80 kilograms each. How many kilograms of melon seeds does this store have?

<gadget id="calculator">400 - 310</gadget>
<output>90</output>
<gadget id="calculator">80 * 3</gadget>
<output>240</output>
<gadget id="calculator">90 + 240</gadget>
<output>330</output>
<result>330</result>


一根蜡烛长1分米2厘米，燃烧后还剩5厘米，燃去了多少厘米．

candle is 1 decimeter and 2 centimeters long, and 5 centimeters remain after burning. How many centimeters are burned?

<gadget id="calculator">12 - 5</gadget>
<output>7</output>
<result>7</result>


一种手表原价每块100元，现在降价到80元，降价百分之几？

The original price of a watch is 100 yuan per piece, but now the price is reduced to 80 yuan, what percentage is the price reduction?

<gadget id="calculator">100 - 80</gadget>
<output>20</output>
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>
<result>1/5 = around 0.2</result>


一个因数是最小的两位数，另一个因数比最小的三位数多2，积是多少．

One factor is the smallest two-digit number, and the other factor is 2 more than the smallest three-digit number. What is the product?

<gadget id="calculator">100 + 2</gadget>
<output>102</output>
<gadget id="calculator">10 * 102</gadget>
<output>1_020</output>
<result>1_020</result>


现在弟弟年龄是哥哥年龄的一半，而3年前弟弟年龄是哥哥年龄的(1/3)，则弟弟今年岁数是多少．

Now the younger brother's age is half of the older brother's age, but 3 years ago the younger brother's age was (1/3) of the older brother's age, what is the younger brother's age this year?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">3 * (1/3)</gadget>
<output>1</output>
<gadget id="calculator">3 - 1</gadget>
<output>2</output>
<gadget id="calculator">2 * (1/3)</gadget>
<output>2/3 = around 0.666667</output>
<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">2 / (1/3)</gadget>
<output>6</output>
<result>6</result>


一个圆锥的体积是4dm**3，底面积是1dm**2，它的高是多少dm．

The volume of a cone is 4dm**3, the area of the base is 1dm**2, what is its height in dm?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">4 / (1/3) / 1</gadget>
<output>12</output>
<result>12</result>


一块三角形的棉田，底长是140米，高是80米，如果每株占地0.4平方米，这块棉田能种多少株棉花？

A triangular cotton field has a base length of 140 meters and a height of 80 meters. If each plant occupies an area of 0.4 square meters, how many cotton plants can be grown in this cotton field?

<gadget id="calculator">80 / 2 / 0.4</gadget>
<output>100</output>
<gadget id="calculator">140 * 100</gadget>
<output>14_000</output>
<result>14_000</result>


一只梅花鹿高1.46米，长颈鹿的身高比它的2倍还多0.4米，长颈鹿高多少米？

A sika deer is 1.46 meters tall, and a giraffe is 0.4 meters taller than twice its height. How many meters tall is a giraffe?

<gadget id="calculator">1.46 * 2</gadget>
<output>2.92</output>
<gadget id="calculator">2.92 + 0.4</gadget>
<output>3.32</output>
<result>3.32</result>


明明一次测试四门功课平均分是90分，现在已经知道数学96分、英语84分，科学88分，他语文考几分呢？(用算式来说明)

Obviously, the average score of the four subjects in one test is 90. Now that he knows that the math is 96, the English is 84, and the science is 88. What is his Chinese score? (use formula to explain)

<gadget id="calculator">90 * 4</gadget>
<output>360</output>
<gadget id="calculator">360 - 96 - 84 - 88</gadget>
<output>92</output>
<result>92</result>


录音机厂第三季度计划生产录音机3600台，实际生产4500台，实际产量超过计划百分之几？

The tape recorder factory planned to produce 3,600 tape recorders in the third quarter, but actually produced 4,500. By what percentage did the actual output exceed the plan?

<gadget id="calculator">4_500 - 3_600</gadget>
<output>900</output>
<gadget id="calculator">900 / 3_600</gadget>
<output>1/4 = around 0.25</output>
<result>1/4 = around 0.25</result>


五(一)班学生人数在30-40人之间，他们可以分成4人一组，也可以分成6人一组，都正好分完，五(一)班有学生多少人．

The number of students in Class 5 (1) is between 30 and 40. They can be divided into groups of 4 or 6, and they are all divided exactly. How many students are there in Class 5 (1).


<gadget id="calculator">8 / 12.5</gadget>
<output>0.64</output>
<gadget id="calculator">12.5 * 0.64 * 8</gadget>
<output>64</output>
<result>64</result>


一个长方形，周长60厘米，它是由3个完全相同的小正方形拼成的．那么每个小正方形的面积是多少平方厘米．

A rectangle with a circumference of 60 cm is composed of 3 identical small squares. What is the area of each small square in square centimetres?

<gadget id="calculator">60 / 8</gadget>
<output>15/2 = around 7.5</output>
<gadget id="calculator">(15/2) * (15/2)</gadget>
<output>225/4 = around 56.25</output>
<result>225/4 = around 56.25</result>


x：2与10：50能组成比例，x应该是多少．

x: 2 and 10:50 can form a ratio, what should be x.

<gadget id="calculator">2 * 10</gadget>
<output>20</output>
<gadget id="calculator">20 / 50</gadget>
<output>2/5 = around 0.4</output>
<result>2/5 = around 0.4</result>


客车和货车分别同时从甲、乙两地相向而行，相遇时客车与货车所行路程的比是7：4，已知客车从甲地行驶到乙地需要9小时，货车每小时行驶48km．甲、乙两地相距多少千米？

The bus and the truck are traveling towards each other from A and B at the same time. When they meet, the ratio of the distance traveled by the bus and the truck is 7:4. It is known that it takes 9 hours for the bus to travel from A to B, and the truck travels 48km per hour. How many kilometers are there between A and B?

<gadget id="calculator">48 * 7</gadget>
<output>336</output>
<gadget id="calculator">336 / 4</gadget>
<output>84</output>
<gadget id="calculator">84 * 9</gadget>
<output>756</output>
<result>756</result>


李华看一本书，已经看了78页，没看的比看了的3倍少8页，这本书共有多少页？

When Li Hua reads a book, he has already read 78 pages, and the number of pages he has not read is three times less than the number of pages he has read. How many pages does this book have?

<gadget id="calculator">78 * 3</gadget>
<output>234</output>
<gadget id="calculator">234 - 8</gadget>
<output>226</output>
<gadget id="calculator">78 + 226</gadget>
<output>304</output>
<result>304</result>


食堂运来了760千克大米，吃了30天，平均每天吃25千克，还剩下多少千克大米？

The cafeteria shipped 760 kilograms of rice and ate it for 30 days, with an average of 25 kilograms per day. How many kilograms of rice are left?

<gadget id="calculator">25 * 30</gadget>
<output>750</output>
<gadget id="calculator">760 - 750</gadget>
<output>10</output>
<result>10</result>


某厂去年上半年生产洗衣机36万台，是下半年产量的(4/5)．这个洗衣机厂去年全年的产量是多少万台？

A factory produced 360,000 washing machines in the first half of last year, which was (4/5) the output in the second half of the year. How many million units did this washing machine factory produce last year?

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">36 / (4/5)</gadget>
<output>45</output>
<gadget id="calculator">45 + 36</gadget>
<output>81</output>
<result>81</result>


同学们在春季开展爱鸟活动，计划自己动手做100个鸟巢，每个用木板1.2平方米，在完成计划的(2/5)后，改进了制作方法，每个比原来节省(1/12)的木料，这批鸟巢完工后，一共可以节省多少木料？

The students carried out bird-loving activities in the spring, and planned to make 100 bird's nests by themselves, each with a plank of 1.2 square meters. After completing the plan (2/5), the production method was improved, and each was saved (1/12 ), how much wood can be saved in total after the completion of this batch of bird nests?

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>
<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>
<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>
<gadget id="calculator">1.2 * (1/12)</gadget>
<output>0.1</output>
<gadget id="calculator">100 * (3/5) * 0.1</gadget>
<output>6</output>
<result>6</result>


一个棱长为20cm的正方体容器里装了一半的水，现将一块铁块投入容器中，铁块完全沉没在水底，水面上升了2cm，这块铁块的体积是多少立方厘米？

A cube container with a side length of 20cm is half filled with water. Now a piece of iron is put into the container. The piece of iron sinks completely at the bottom of the water and the water level rises by 2cm. What is the volume of the piece of iron in cubic centimeters?

<gadget id="calculator">20 * 20 * 2</gadget>
<output>800</output>
<result>800</result>


一件儿童上衣价格是32元，一件成人上衣价格是288元．一件成人上衣的价格是一件儿童上衣价格的多少倍？

The price of a children's top is 32 yuan, and the price of an adult top is 288 yuan. How many times the price of a top for an adult is the price of a top for a child?

<gadget id="calculator">288 / 32</gadget>
<output>9</output>
<result>9</result>


小明在计算63除以一个两位小数的商时，没有把除数转化成整数就直接计算了，结果错算商为7，这个两位小数应该是多少？

When Xiao Ming calculated the quotient of dividing 63 by a two-digit decimal, he calculated it directly without converting the divisor into an integer. The result was a miscalculated quotient of 7. What should the two-digit decimal be?

<gadget id="calculator">7 * 100</gadget>
<output>700</output>
<gadget id="calculator">63 / 700</gadget>
<output>9/100 = around 0.09</output>
<result>9/100 = around 0.09</result>


What is the solution of the equation 3x-4=17 is x=

<gadget id="calculator">17 + 4</gadget>
<output>21</output>
<gadget id="calculator">21 / 3</gadget>
<output>7</output>
<result>7</result>


王师傅每小时做80个零件，李师傅每小时做的零件个数是王师傅的5倍，李师傅每小时做多少个零件？

Master Wang makes 80 parts per hour, and the number of parts that Master Li makes per hour is 5 times that of Master Wang. How many parts does Master Li make per hour?

<gadget id="calculator">80 * 5</gadget>
<output>400</output>
<result>400</result>


摄影小组为第一小队同学拍摄一张集体照．一张底片和三张照片共收费5.70元，加洗一张照片收费0.9元，第一小队共有15名同学，如果每人要一张照片(底片费由15人平均分摊)，那么平均每人应付多少元？

The photography team took a group photo for the students of the first team. One negative and three photos are charged 5.70 yuan in total, and one additional photo is charged 0.9 yuan. There are 15 students in the first team. How much should I pay?

<gadget id="calculator">15 - 3</gadget>
<output>12</output>
<gadget id="calculator">12 * 0.9</gadget>
<output>10.8</output>
<gadget id="calculator">10.8 + 5.7</gadget>
<output>16.5</output>
<gadget id="calculator">16.5 / 15</gadget>
<output>1.1</output>
<result>1.1</result>


有2个铁球，小球重250克，大球比小球的2倍还重50克．2个铁球共重多少克．

There are 2 iron balls, the small ball weighs 250 grams, and the large ball weighs 50 grams twice as much as the small ball. What is the total weight of 2 iron balls in grams?

<gadget id="calculator">250 * 2</gadget>
<output>500</output>
<gadget id="calculator">500 + 50 + 250</gadget>
<output>800</output>
<result>800</result>


一个圆的直径是20厘米，从该圆中剪一个圆心角为72度的扇形，该扇形的周长是多少厘米．

If a circle has a diameter of 20 cm and a sector with a central angle of 72 degrees is cut from the circle, what is the circumference of the sector in centimeters?

<gadget id="calculator">72 / 360</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">3.14 * 20 * (1/5)</gadget>
<output>12.56</output>
<gadget id="calculator">12.56 + 20</gadget>
<output>32.56</output>
<result>32.56</result>


河边种了一排柳树，每两棵树之间相距6米，小军从第1棵树跑到第100棵树，一共跑了多少米？

A row of willow trees is planted by the river, and the distance between every two trees is 6 meters. How many meters did Xiaojun run from the first tree to the 100th tree?

<gadget id="calculator">100 - 1</gadget>
<output>99</output>
<gadget id="calculator">99 * 6</gadget>
<output>594</output>
<result>594</result>


李老师买来同样数量的跳绳和羽毛球分给五年级的各个班级，每个班分得5根跳绳和8个羽毛球，结果羽毛球全部分完．跳绳还剩21根．这个学校五年级有几个班级？

Teacher Li bought the same number of skipping ropes and badmintons and distributed them to each class of the fifth grade. Each class got 5 skipping ropes and 8 badmintons, but all the badmintons were finished. There are 21 skipping ropes left. How many classes are there in the fifth grade in this school?

<gadget id="calculator">8 - 5</gadget>
<output>3</output>
<gadget id="calculator">21 / 3</gadget>
<output>7</output>
<result>7</result>


一列火车长180米，每秒行25米．全车通过一条120米长的山洞，需要多少时间？

A train is 180 meters long and travels 25 meters per second. How long does it take for the whole car to pass through a 120-meter-long cave?

<gadget id="calculator">180 + 120</gadget>
<output>300</output>
<gadget id="calculator">300 / 25</gadget>
<output>12</output>
<result>12</result>


一个圆柱体与一个圆锥体的体积相等，圆柱体的高是18厘米，它的底面积是圆锥体底面积的3倍，圆锥体的高是多少厘米．

cylinder has the same volume as a cone. The height of the cylinder is 18 cm. The area of its base is three times the area of the base of the cone. What is the height of the cone in cm?


小红订报纸，有《数学报》、《关心下一代》和《快乐作文》三种供选择，她最少订阅1份，最多订阅3份，有多少种不同的订阅方法．

Xiaohong subscribes to newspapers, there are three options: "Journal of Mathematics", "Concern for the Next Generation" and "Happy Composition". She subscribes at least 1 and at most 3. How many different subscription methods are there?

<gadget id="calculator">3 + 3 + 1</gadget>
<output>7</output>
<result>7</result>


2011年我国公布了新的个人收入所得税征收标准．个人收入3000元以下不征税．月收入超过3000元，超过部分分步计税，不超过500元的按5%征收个人所得税；超过500元的部分按10%征收个人所得税．小明的妈妈月收入5200元，她每月要缴纳多少元个人所得税？

In 2011, my country announced a new personal income tax collection standard. Personal income below 3,000 yuan is not taxed. If the monthly income exceeds 3,000 yuan, the excess part will be taxed step by step. If the monthly income does not exceed 500 yuan, the personal income tax will be levied at 5%; if the monthly income exceeds 500 yuan, the personal income tax will be levied at 10%. Xiaoming's mother has a monthly income of 5,200 yuan. How much does she have to pay in personal income tax every month?

<gadget id="calculator">5 / 100</gadget>
<output>1/20 = around 0.05</output>
<gadget id="calculator">500 * (1/20)</gadget>
<output>25</output>
<gadget id="calculator">5_200 - 3_000</gadget>
<output>2_200</output>
<gadget id="calculator">2_200 - 500</gadget>
<output>1_700</output>
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">1_700 * (1/10)</gadget>
<output>170</output>
<gadget id="calculator">25 + 170</gadget>
<output>195</output>
<result>195</result>


生产一批零件，其中合格的有475个，次品有25个，这批零件的合格率是多少？

Produce a batch of parts, of which 475 are qualified and 25 are defective. What is the pass rate of this batch of parts?

<gadget id="calculator">475 + 25</gadget>
<output>500</output>
<gadget id="calculator">475 / 500</gadget>
<output>19/20 = around 0.95</output>
<gadget id="calculator">100 / 100</gadget>
<output>1</output>
<gadget id="calculator">(19/20) * 1</gadget>
<output>19/20 = around 0.95</output>
<result>19/20 = around 0.95</result>


一个长5cm、宽3cm的长方形按3：1放大，得到的图形的面积是多少cm**2．

A rectangle with a length of 5 cm and a width of 3 cm is enlarged by 3:1, what is the area of the obtained figure in cm**2.

<gadget id="calculator">5 * 3</gadget>
<output>15</output>
<gadget id="calculator">3 * 3</gadget>
<output>9</output>
<gadget id="calculator">15 * 9</gadget>
<output>135</output>
<result>135</result>


0.32*0.51得数保留两位小数约是多少．

What is the approximate value of 0.32*0.51 with two decimal places?


在一块面积为15公顷的坡地上种树，每棵树占地3平方米，这块地可种多少棵树？

Plant trees on a sloping land with an area of 15 hectares, each tree covers an area of 3 square meters, how many trees can be planted on this land?

<gadget id="calculator">15 * 10_000</gadget>
<output>150_000</output>
<gadget id="calculator">150_000 / 3</gadget>
<output>50_000</output>
<result>50_000</result>


王刚要用木条钉一个长方形的相框，这个相框的长为80厘米，宽为50厘米．王刚需要买多长的木条？(请先写出字母公式，再解答．)

Wang Gang wants to nail a rectangular photo frame with wooden strips. The length of this photo frame is 80 cm and the width is 50 cm. How long does Wang Gang need to buy? (Please write out the letter formula first, and then answer.)

<gadget id="calculator">80 + 50</gadget>
<output>130</output>
<gadget id="calculator">130 * 2</gadget>
<output>260</output>
<result>260</result>


小明开始练习打字时，每分钟只能打15个字，现在每分钟打字的个数是刚开始时的12倍，现在每分钟打多少字？

When Xiao Ming started to practice typing, he could only type 15 words per minute. Now the number of typing per minute is 12 times that at the beginning. How many words per minute are he typing now?

<gadget id="calculator">15 * 12</gadget>
<output>180</output>
<result>180</result>


31*□-27*□=24，如果□代表的数相同，那么□=多少．

31*□-27*□=24, if the numbers represented by □ are the same, then □=how much.

<gadget id="calculator">31 - 27</gadget>
<output>4</output>
<gadget id="calculator">24 / 4</gadget>
<output>6</output>
<result>6</result>


红红买了两本书，一本是18.6元，另一本是26.9元，口袋里还剩18.3元，红红原来有多少元？

Honghong bought two books, one was 18.6 yuan, the other was 26.9 yuan, and there was 18.3 yuan left in her pocket. How much did Honghong have?

<gadget id="calculator">18.6 + 26.9 + 18.3</gadget>
<output>63.8</output>
<result>63.8</result>


一项工程，甲独做要6天完成，乙独做要10天完成，两队合作3天，剩下的由甲队独做，还要多少天可以完成？

A project can be completed in 6 days by A alone, 10 days by B alone, 3 days by the cooperation of the two teams, and the rest is done by Team A alone, how many days will it take to complete?

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">(1/6) + (1/10)</gadget>
<output>4/15 = around 0.266667</output>
<gadget id="calculator">(4/15) * 3</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">(1/5) / (1/6)</gadget>
<output>6/5 = around 1.2</output>
<result>6/5 = around 1.2</result>


The subtrahend is (4/7) of the minuend, and the difference is ((())/(())) of the subtrahend.

<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>
<gadget id="calculator">1 - (4/7)</gadget>
<output>3/7 = around 0.428571</output>
<gadget id="calculator">(3/7) / (4/7)</gadget>
<output>3/4 = around 0.75</output>
<result>3/4 = around 0.75</result>


一个直角梯形，上底和下底的比是3：5，如果将上底增加8厘米，下底增加2厘米，就变成一个正方形．求这个梯形的面积．

A right-angled trapezoid, the ratio of the upper base to the lower base is 3:5, if the upper base is increased by 8 cm, and the lower base is increased by 2 cm, it becomes a square. Find the area of this trapezoid.

<gadget id="calculator">8 - 2</gadget>
<output>6</output>
<gadget id="calculator">5 - 3</gadget>
<output>2</output>
<gadget id="calculator">6 / 2</gadget>
<output>3</output>
<gadget id="calculator">3 * 5</gadget>
<output>15</output>
<gadget id="calculator">9 + 15</gadget>
<output>24</output>
<gadget id="calculator">9 + 8</gadget>
<output>17</output>
<gadget id="calculator">17 / 2</gadget>
<output>17/2 = around 8.5</output>
<gadget id="calculator">24 * (17/2)</gadget>
<output>204</output>
<result>204</result>


小明借来一本故事书，如果每天读8页，15天可以读完，现在要提前3天读完，每天应该读多少页？

Xiao Ming borrowed a story book. If he reads 8 pages a day, he can finish it in 15 days. Now he has to finish it 3 days in advance. How many pages should he read every day?

<gadget id="calculator">15 - 3</gadget>
<output>12</output>
<gadget id="calculator">8 / 12</gadget>
<output>2/3 = around 0.666667</output>
<gadget id="calculator">15 * (2/3)</gadget>
<output>10</output>
<result>10</result>


某人用27元买了一头羊，饲养了一段时间后卖了60元．算上饲料费，实际还赔了钱，赔的钱正好是这只羊进价的一半加上饲料费的四分之一．他赔了多少钱？

Someone bought a sheep for 27 yuan and sold it for 60 yuan after raising it for a period of time. Counting the feed cost, he actually lost money, which was exactly half the purchase price of the sheep plus a quarter of the feed cost. How much did he lose?

<gadget id="calculator">27 / 2</gadget>
<output>27/2 = around 13.5</output>
<gadget id="calculator">(27/2) - 27</gadget>
<output>-27/2 = around -13.5</output>
<gadget id="calculator">60 + (-27/2)</gadget>
<output>93/2 = around 46.5</output>
<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">(93/2) / (3/4)</gadget>
<output>62</output>
<gadget id="calculator">62 - 60</gadget>
<output>2</output>
<gadget id="calculator">27 + 2</gadget>
<output>29</output>
<result>29</result>


从早上8时到下午5时，经过了多少小时．

How many hours have passed from 8:00 am to 5:00 pm.


超市运来黄瓜是油菜的3倍，西红柿比油菜多5筐，西红柿有18筐，运来的黄瓜有多少筐？

There are 3 times more cucumbers than rapeseed in supermarkets, 5 more baskets of tomatoes than rapeseed, 18 baskets of tomatoes, how many baskets of cucumbers are shipped?


<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>
<gadget id="calculator">1 - (1/2)</gadget>
<output>1/2 = around 0.5</output>
<gadget id="calculator">(3/2) / (1/2)</gadget>
<output>3</output>
<result>3</result>


电动车原价是2200元，商店开展促销活动，按照原价的85%出售，现在电动车的价格是多少？

The original price of the electric car is 2,200 yuan, and the store is carrying out promotional activities to sell it at 85% of the original price. What is the price of the electric car now?

<gadget id="calculator">85 / 100</gadget>
<output>17/20 = around 0.85</output>
<gadget id="calculator">2_200 * (17/20)</gadget>
<output>1_870</output>
<result>1_870</result>


一块长方形菜地，长12米，宽8米，已知每平方米收获菜15千克，求这块菜地共收菜多少千克？

A rectangular vegetable field is 12 meters long and 8 meters wide. It is known that 15 kilograms of vegetables are harvested per square meter. How many kilograms of vegetables are harvested in this vegetable field?

<gadget id="calculator">12 * 8 * 15</gadget>
<output>1_440</output>
<result>1_440</result>


一段方钢长4米，横截面是边长5分米的正方形，这段方钢的体积是多少？

A piece of square steel is 4 meters long and its cross section is a square with a side length of 5 decimeters. What is the volume of this piece of square steel?

<gadget id="calculator">4 * 10</gadget>
<output>40</output>
<gadget id="calculator">5 * 5 * 40</gadget>
<output>1_000</output>
<result>1_000</result>


有5个数，平均数是11．如果把其中一个数改为2，那么这5个数的平均数为9.2．被改的这个数字是多少．

There are 5 numbers and the average is 11. If one of the numbers is changed to 2, then the average of these 5 numbers is 9.2. What is the number that has been changed?

<gadget id="calculator">11 * 5</gadget>
<output>55</output>
<gadget id="calculator">9.2 * 5</gadget>
<output>46</output>
<gadget id="calculator">55 - 46</gadget>
<output>9</output>
<gadget id="calculator">2 + 9</gadget>
<output>11</output>
<result>11</result>


0.1连续相加多少次，结果是2．

How many times does 0.1 add up consecutively, and the result is 2.

<gadget id="calculator">2 / 0.1</gadget>
<output>20</output>
<gadget id="calculator">20 - 1</gadget>
<output>19</output>
<result>19</result>


李叔叔投了某种医疗保险，此保险规定：医疗费在800元以内(含800元)个人负担，保险公司不赔偿；医疗费超过800元的，超出部分保险公司赔偿80%．李叔叔5月份因病住院，共花了6000元的医疗费，经保险公司赔偿后，李叔叔个人要负担多少元医疗费？

Uncle Li has invested in some kind of medical insurance. This insurance stipulates that: if the medical expenses are less than 800 yuan (including 800 yuan), the insurance company will not compensate; if the medical expenses exceed 800 yuan, the excess part of the insurance company will pay 80%. Uncle Li was hospitalized due to illness in May, and spent a total of 6,000 yuan in medical expenses. After compensation from the insurance company, how much medical expenses will Uncle Li personally bear?

<gadget id="calculator">6_000 - 800</gadget>
<output>5_200</output>
<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">5_200 * (1/5)</gadget>
<output>1_040</output>
<gadget id="calculator">800 + 1_040</gadget>
<output>1_840</output>
<result>1_840</result>


上个月小明家交电费105元，这个月比上个月节约一成，这个月小明家应交电费多少元

Last month, Xiao Ming’s family paid 105 yuan for electricity, and this month it saved 10% compared to last month. How much should Xiao Ming’s family pay for electricity this month?

<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">105 * (9/10)</gadget>
<output>189/2 = around 94.5</output>
<result>189/2 = around 94.5</result>


一只筐里装了半框苹果，倒出苹果的(1/5)后，还剩24千克，这个框里最多能装多少千克苹果？

There is half a box of apples in a basket, and after pouring out (1/5) of the apples, there are 24 kilograms left. How many kilograms of apples can this box hold at most?

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">(1/2) - (1/5)</gadget>
<output>3/10 = around 0.3</output>
<gadget id="calculator">24 / (3/10)</gadget>
<output>80</output>
<result>80</result>


超市购进30箱儿童牙膏，每箱25盒，每盒卖4元钱，这些儿童牙膏可卖多少元？

The supermarket buys 30 boxes of children's toothpaste, 25 boxes per box, and each box sells for 4 yuan. How much can these children's toothpaste be sold for?

<gadget id="calculator">30 * 25</gadget>
<output>750</output>
<gadget id="calculator">4 * 750</gadget>
<output>3_000</output>
<result>3_000</result>


某市自来水公司规定"每户的用水量在5吨以内(含5吨)，按每吨2.6元收费，每户用水量超过5吨的部分，按每吨3元收费．"小明家上月缴水费43元．小明家上月用水多少吨．

city’s water supply company stipulates that “every household’s water consumption is within 5 tons (including 5 tons), the fee is 2.6 yuan per ton, and the part of each household’s water consumption exceeds 5 tons is charged at 3 yuan per ton.” Xiaoming’s home last month Pay the water bill 43 yuan. How many tons did Xiaoming's house use last month?

<gadget id="calculator">2.6 * 5</gadget>
<output>13</output>
<gadget id="calculator">43 - 13</gadget>
<output>30</output>
<gadget id="calculator">30 / 3</gadget>
<output>10</output>
<gadget id="calculator">10 + 5</gadget>
<output>15</output>
<result>15</result>


一根木料长2米，第一次用去这根木料的(1/3)，第二次用去这根木料的(2/5)，还剩几分之几？

A piece of wood is 2 meters long, the first time (1/3) of this wood is used, and the second time (2/5) of this wood is used, what fraction is left?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>
<gadget id="calculator">1 - (1/3) - (2/5)</gadget>
<output>4/15 = around 0.266667</output>
<result>4/15 = around 0.266667</result>


甲、乙二人从A、B两地同时相向而行，甲、乙速度的比是5：4，相遇后甲速不变，乙加快速度，乙每分钟比甲多行24千米，结果当乙到达A地时，甲离B地还有1分钟路程，已知乙共行了14分钟，求A、B两地相距多少千米？

Two people, A and B, are walking toward each other from places A and B at the same time. The speed ratio of A and B is 5:4. After meeting, A’s speed remains unchanged, while B speeds up. B travels 24 kilometers more than A per minute. The result When B arrives at point A, A is still 1 minute away from point B. It is known that B has traveled for 14 minutes. How many kilometers is the distance between A and B?

<gadget id="calculator">14 * 24</gadget>
<output>336</output>
<gadget id="calculator">25 / 3</gadget>
<output>25/3 = around 8.333333</output>
<gadget id="calculator">(25/3) * 24</gadget>
<output>200</output>
<gadget id="calculator">336 - 200</gadget>
<output>136</output>
<gadget id="calculator">(25/3) - 14</gadget>
<output>-17/3 = around -5.666667</output>
<gadget id="calculator">(25/3) + (-17/3)</gadget>
<output>8/3 = around 2.666667</output>
<gadget id="calculator">136 / (8/3)</gadget>
<output>51</output>
<gadget id="calculator">14 + 1</gadget>
<output>15</output>
<gadget id="calculator">51 * 15</gadget>
<output>765</output>
<result>765</result>


一个长方体的盒子，它的长、宽、高分别是7厘米、5厘米、3厘米．它的表面积是多少平方厘米．

A cuboid box has a length, width, and height of 7 cm, 5 cm, and 3 cm, respectively. What is its surface area in square centimetres.

<gadget id="calculator">7 * 5</gadget>
<output>35</output>
<gadget id="calculator">7 * 3</gadget>
<output>21</output>
<gadget id="calculator">5 * 3</gadget>
<output>15</output>
<gadget id="calculator">35 + 21 + 15</gadget>
<output>71</output>
<gadget id="calculator">71 * 2</gadget>
<output>142</output>
<result>142</result>


在1000到4000之间(包括1000与4000)，至少有两个数字相同的四位数共有多少个．

Between 1000 and 4000 (including 1000 and 4000), how many four-digit numbers have at least two numbers that are the same.

<gadget id="calculator">3 * 9 * 8 * 7</gadget>
<output>1_512</output>
<gadget id="calculator">3_001 - 1_512</gadget>
<output>1_489</output>
<result>1_489</result>


小聪上学期语文和数学平均分是96分，语文95，数学是多少分．

Xiao Cong's average score in Chinese and mathematics last semester was 96, and Chinese was 95. What is the score in mathematics?

<gadget id="calculator">96 * 2</gadget>
<output>192</output>
<gadget id="calculator">192 - 95</gadget>
<output>97</output>
<result>97</result>


四位球迷结伴去体育馆看女排比赛，来回的交通费一共是16元，门票每人30元．平均每人花了多少钱？

Four fans went to the gymnasium to watch the women's volleyball match. The round-trip transportation cost was 16 yuan, and the tickets were 30 yuan per person. How much did each person spend on average?

<gadget id="calculator">16 / 4</gadget>
<output>4</output>
<gadget id="calculator">4 + 30</gadget>
<output>34</output>
<result>34</result>


养鸡场养有公鸡125只，母鸡的只数是公鸡的2倍，养鸡场共养了多少只鸡？

There are 125 roosters in the chicken farm, and twice as many hens as roosters. How many chickens are there in the chicken farm?

<gadget id="calculator">2 + 1</gadget>
<output>3</output>
<gadget id="calculator">125 * 3</gadget>
<output>375</output>
<result>375</result>


一个最简分数，把它的分母扩大4倍，分子缩小9倍后为(1/88)，原分数是多少．

A simple fraction, its denominator is enlarged by 4 times, and its numerator is reduced by 9 times is (1/88), what is the original fraction?

<gadget id="calculator">1 / 88</gadget>
<output>1/88 = around 0.011364</output>
<gadget id="calculator">4 * 9</gadget>
<output>36</output>
<gadget id="calculator">(1/88) * 36</gadget>
<output>9/22 = around 0.409091</output>
<result>9/22 = around 0.409091</result>


一件衣服原价80元，现价50元．现价比原价降低了百分之几？

The original price of a piece of clothing is 80 yuan, and the current price is 50 yuan. How much is the current price lower than the original price?

<gadget id="calculator">80 - 50</gadget>
<output>30</output>
<gadget id="calculator">30 / 80</gadget>
<output>3/8 = around 0.375</output>
<result>3/8 = around 0.375</result>


一项工程甲独做10天完成，乙独做15天完成，二人合做多少天完成这项工程的(2/3)．

A project can be completed in 10 days alone, and B can be completed in 15 days alone, how many days will the two work together to complete the project (2/3).

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>
<gadget id="calculator">(1/10) + (1/15)</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">(2/3) / (1/6)</gadget>
<output>4</output>
<result>4</result>


<gadget id="calculator">12 * 21 * 45 * 10.2</gadget>
<output>115_668</output>
<gadget id="calculator">15 * 4 * 0.7 * 51</gadget>
<output>2_142</output>
<gadget id="calculator">115_668 / 2_142</gadget>
<output>54</output>
<result>54</result>


少年宫乐队有女同学80个，男同学90人．合唱队的人数是乐队的4倍，合唱队有多少人？

The Children's Palace Band has 80 female students and 90 male students. The number of chorus is 4 times that of the orchestra, how many people are there in the chorus?

<gadget id="calculator">80 + 90</gadget>
<output>170</output>
<gadget id="calculator">170 * 4</gadget>
<output>680</output>
<result>680</result>


一个梯形的面积是4.5平方分米，上底是15厘米，高是2分米，下底是多少分米．

The area of a trapezoid is 4.5 square decimeters, the upper base is 15 cm, the height is 2 decimeters, and the lower base is how many decimeters.

<gadget id="calculator">2 / 2</gadget>
<output>1</output>
<gadget id="calculator">4.5 * 1</gadget>
<output>4.5</output>
<gadget id="calculator">15 / 10</gadget>
<output>3/2 = around 1.5</output>
<gadget id="calculator">4.5 - (3/2)</gadget>
<output>3</output>
<result>3</result>


一个直角三角形，两条直角边分别为3cm和4cm．以长直角边为轴旋转一周，所得图形的体积是多少？

A right triangle with two sides measuring 3cm and 4cm. What is the volume of the resulting figure when it is rotated around the long side as the axis?

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">3 ** 2</gadget>
<output>9</output>
<gadget id="calculator">(1/3) * 3.14 * 9 * 4</gadget>
<output>37.68</output>
<result>37.68</result>


开会时，10位观众并列坐在一排，甲和乙坐在一起，并且甲在乙的左边，有几种排列方法？

During a meeting, 10 spectators sit side by side in a row, A and B sit together, and A is on the left of B, how many ways are there to arrange them?


有一根木料用(3/4)小时截成4段，如果每段所用时间都相同，那么截成8段共需多少小时．

It takes (3/4) hours to cut a piece of wood into 4 sections. If each section takes the same time, how many hours will it take to cut it into 8 sections?

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>
<gadget id="calculator">4 - 1</gadget>
<output>3</output>
<gadget id="calculator">(3/4) / 3</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">8 - 1</gadget>
<output>7</output>
<gadget id="calculator">(1/4) * 7</gadget>
<output>7/4 = around 1.75</output>
<result>7/4 = around 1.75</result>


一个三角形的面积72cm**2，高是36cm，底是多少cm．

The area of a triangle is 72cm**2, the height is 36cm, and the base is in cm.

<gadget id="calculator">2 / 36</gadget>
<output>1/18 = around 0.055556</output>
<gadget id="calculator">72 * (1/18)</gadget>
<output>4</output>
<result>4</result>


修一条水渠，第一天修了全长的40%，第二天修了全长的30%，还剩下150米没修．这条水渠长多少米？

To build a canal, 40% of the total length was repaired on the first day, and 30% of the total length was repaired on the second day, leaving 150 meters to be repaired. How many meters is this canal?

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>
<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>
<gadget id="calculator">1 - (2/5) - (3/10)</gadget>
<output>3/10 = around 0.3</output>
<gadget id="calculator">150 / (3/10)</gadget>
<output>500</output>
<result>500</result>


五3班学生有51人，男生比女生多3人，女生有多少人？

There are 51 students in Class 5 and 3, 3 more boys than girls, how many girls are there?

<gadget id="calculator">51 - 3</gadget>
<output>48</output>
<gadget id="calculator">48 / 2</gadget>
<output>24</output>
<result>24</result>


小红参加了3次数学竞赛，平均分是84分，已知前两次总分是164分，他第三次得了多少分？

Xiaohong has participated in three math competitions, with an average score of 84. It is known that the total score of the first two is 164. How many points did he get in the third time?

<gadget id="calculator">84 * 3</gadget>
<output>252</output>
<gadget id="calculator">252 - 164</gadget>
<output>88</output>
<result>88</result>


小王家离工厂3千米，他每天骑车以每分钟200米的速度上班，正好准时到工厂．有一天，他出发几分钟后，因遇到熟人停车2分钟，为了准时到工厂，后面的路必须每分钟多行100米．小王是在离工厂多远处遇到熟人的？

Xiao Wang's home is 3 kilometers away from the factory. He rides to work at a speed of 200 meters per minute every day, and arrives at the factory on time. One day, a few minutes after he set off, he met an acquaintance and stopped for 2 minutes. In order to arrive at the factory on time, the road behind had to travel 100 meters per minute. How far away from the factory did Xiao Wang meet the acquaintance?

<gadget id="calculator">3 - 2</gadget>
<output>1</output>
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>
<gadget id="calculator">2 / (1/2)</gadget>
<output>4</output>
<gadget id="calculator">200 + 100</gadget>
<output>300</output>
<gadget id="calculator">4 * 300</gadget>
<output>1_200</output>
<result>1_200</result>


某工厂上半月完成计划的65%，下半月完成计划的(1/2)，这个月增产多少

factory completed 65% of the plan in the first half of the month, and completed (1/2) of the plan in the second half of the month. How much is the increase in production this month?

<gadget id="calculator">65 / 100</gadget>
<output>13/20 = around 0.65</output>
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>
<gadget id="calculator">(1/2) - 1</gadget>
<output>-1/2 = around -0.5</output>
<gadget id="calculator">(13/20) + (-1/2)</gadget>
<output>3/20 = around 0.15</output>
<result>3/20 = around 0.15</result>


一个长方体水池，底面是边长为20米的正方形，深4米，现在水池中盛水只有2.5米，这时水池中有水多少立方米？

A cuboid pool has a bottom of a square with a side length of 20 meters and a depth of 4 meters. Now the pool contains only 2.5 meters of water. How many cubic meters of water are there in the pool?

<gadget id="calculator">20 * 20 * 2.5</gadget>
<output>1_000</output>
<result>1_000</result>


小华存了45元的零用钱，他拿出其中的(5/9)捐给了地震灾区的希望小学．小华捐了多少元钱？

Xiaohua saved 45 yuan of pocket money, and he took out (5/9) of it and donated it to the Hope Primary School in the earthquake-stricken area. How much did Xiaohua donate?

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>
<gadget id="calculator">45 * (5/9)</gadget>
<output>25</output>
<result>25</result>


一个长方体木块，高2.4dm，平行于底面截成两个长方体后，表面积比原来增加了100cm**2．原长方体木料的体积是多少cm**3．

A cuboid wooden block with a height of 2.4dm is cut into two cuboids parallel to the bottom surface, and the surface area increases by 100cm**2. What is the volume of the original cuboid wood in cm**3.

<gadget id="calculator">100 / 2</gadget>
<output>50</output>
<gadget id="calculator">2.4 * 10</gadget>
<output>24</output>
<gadget id="calculator">50 * 24</gadget>
<output>1_200</output>
<result>1_200</result>


6位老师带着178位学生去郊游．每顶帐蓬最多只能住8人．至少要搭多少顶帐篷？

6 teachers took 178 students for an outing. Each tent can only accommodate up to 8 people. At least how many tents do you need to pitch?

<gadget id="calculator">6 + 178</gadget>
<output>184</output>
<gadget id="calculator">184 / 8</gadget>
<output>23</output>
<result>23</result>


小王体重30千克，小丽比小王重(1/6)．小丽的体重是多少？

Xiao Wang weighs 30 kg, and Xiao Li is (1/6) heavier than Xiao Wang. How much does Xiao Li weigh?

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">1 + (1/6)</gadget>
<output>7/6 = around 1.166667</output>
<gadget id="calculator">30 * (7/6)</gadget>
<output>35</output>
<result>35</result>


一根圆柱形木材长2米，把它截成相等的4段后，表面积增加了18.84平方厘米．截成后每段圆木的体积是多少立方厘米？

A cylindrical piece of wood is 2 meters long. After cutting it into 4 equal sections, the surface area increases by 18.84 square centimeters. What is the volume of each log in cubic centimeters after cutting?

<gadget id="calculator">18.84 / 6</gadget>
<output>3.14</output>
<gadget id="calculator">2 * 100</gadget>
<output>200</output>
<gadget id="calculator">200 / 4</gadget>
<output>50</output>
<gadget id="calculator">3.14 * 50</gadget>
<output>157</output>
<result>157</result>


李大伯家有一块长15米、宽12米的长方形菜地，一面靠墙，如果另外三面围上篱笆，至少要用多少米长的篱笆？

Uncle Li’s family has a rectangular vegetable field with a length of 15 meters and a width of 12 meters. One side is against the wall. If the other three sides are surrounded by fences, how many meters of fences should be used at least?

<gadget id="calculator">12 * 2</gadget>
<output>24</output>
<gadget id="calculator">15 + 24</gadget>
<output>39</output>
<result>39</result>


一个长方体的体积是96立方分米，底面积是16平方分米，它的高是多少分米．

A cuboid has a volume of 96 cubic decimeters and a base area of 16 square decimeters. What is its height?

<gadget id="calculator">96 / 16</gadget>
<output>6</output>
<result>6</result>


小明今年身高1.53m，比去年高8cm，小明去年身高多少？

Xiao Ming is 1.53m tall this year, 8cm taller than last year. How tall was Xiao Ming last year?

<gadget id="calculator">8 / 100</gadget>
<output>2/25 = around 0.08</output>
<gadget id="calculator">1.53 - (2/25)</gadget>
<output>1.45</output>
<result>1.45</result>


4千克苹果平均分给5个小朋友，每个小朋友分得多少千克苹果．

If 4 kilograms of apples are distributed to 5 children on average, how many kilograms of apples will each child receive?

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>
<result>4/5 = around 0.8</result>


一整块大豆腐长40厘米，宽20厘米．厨师准备把它切成一些长5厘米，宽4厘米的小块，而且每次只能沿着直线切，如果不允许移动豆腐的位置，那么厨师至少要切几次？

A whole piece of tofu is 40 cm long and 20 cm wide. The chef is going to cut it into small pieces with a length of 5 cm and a width of 4 cm, and each time it can only be cut along a straight line. If the position of the tofu is not allowed to move, then the chef must cut it at least a few times?

<gadget id="calculator">40 / 5</gadget>
<output>8</output>
<gadget id="calculator">8 - 1</gadget>
<output>7</output>
<gadget id="calculator">20 / 4</gadget>
<output>5</output>
<gadget id="calculator">5 - 1</gadget>
<output>4</output>
<gadget id="calculator">7 + 4</gadget>
<output>11</output>
<result>11</result>


运60吨货物，甲车需要15次运完，乙车需要10次运完．甲乙两车合运几次运完？

To transport 60 tons of goods, car A needs to be transported 15 times, and car B needs to be transported 10 times. How many times can A and B be transported together?

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>
<gadget id="calculator">(1/10) + (1/15)</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">1 / (1/6)</gadget>
<output>6</output>
<result>6</result>


牛牛用10元钱买了一个玩具，胖胖对他的玩具非常喜欢，花20元钱买了过去．过了几天，牛牛有些舍不得，又花30元钱从胖胖手里买了回来．又过了几天，胖胖花40元又把玩具从牛牛手里买走．在整个过程中，牛牛共赚了多少元钱？

Niu Niu bought a toy for 10 yuan. Pang Pang liked his toy very much and bought it for 20 yuan. After a few days, Niu Niu was a little reluctant, and bought it back from Pangpang for another 30 yuan. A few days later, Pangpang spent 40 yuan to buy the toy from Niu Niu again. In the whole process, how much money did Niu Niu earn in total?

<gadget id="calculator">40 - 30</gadget>
<output>10</output>
<gadget id="calculator">20 - 10</gadget>
<output>10</output>
<gadget id="calculator">10 + 10</gadget>
<output>20</output>
<result>20</result>


一个数的倒数是0.125，这个数是多少．

The reciprocal of a number is 0.125, what is this number?

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


小明家装修房子，用长是3分米，宽是2分米的长方形地砖，160块正好铺满．如果改用面积是8平方分米的正方形地砖，需要多少块？

Xiaoming's house is decorated with rectangular floor tiles with a length of 3 decimeters and a width of 2 decimeters, 160 of which are exactly covered. If you use square floor tiles with an area of 8 square decimeters, how many pieces are needed?

<gadget id="calculator">3 * 2 * 160</gadget>
<output>960</output>
<gadget id="calculator">960 / 8</gadget>
<output>120</output>
<result>120</result>


甲乙两车分别从两地同时相对开出，3小时后甲乙两车在离中点10千米处相遇．此时，甲乙两车所行路程比是9：10．两地相距多少千米？

Cars A and B drive out from two places at the same time. After 3 hours, cars A and B meet at a distance of 10 kilometers from the midpoint. At this time, the ratio of the distance traveled by the two vehicles is 9:10. How many kilometers are the distance between the two places?

<gadget id="calculator">10 - 9</gadget>
<output>1</output>
<gadget id="calculator">2 / 1</gadget>
<output>2</output>
<gadget id="calculator">10 + 9</gadget>
<output>19</output>
<gadget id="calculator">10 * 2 * 19</gadget>
<output>380</output>
<result>380</result>


一个圆柱的底面半径是4厘米，它的侧面展开正好是一个正方形，这个圆柱的高是多少厘米．

The radius of the base of a cylinder is 4 cm, and its lateral expansion is exactly a square. What is the height of the cylinder in cm?

<gadget id="calculator">2 * 3.14 * 4</gadget>
<output>25.12</output>
<result>25.12</result>


星星小学有学生840人，三年级学生数是全校学生总数的(2/7)，三年级有学生多少人？

There are 840 students in Xingxing Primary School, and the number of students in the third grade is 2/7 of the total number of students in the school. How many students are there in the third grade?

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>
<gadget id="calculator">840 * (2/7)</gadget>
<output>240</output>
<result>240</result>


一根长为30厘米的圆柱钢筋，锯成两段同样的小圆柱后，表面积增加了40平方厘米，求原来圆柱形钢筋的体积．

cylindrical steel bar with a length of 30 cm is sawed into two identical small cylinders, and the surface area increases by 40 cm2. Find the volume of the original cylindrical steel bar.

<gadget id="calculator">40 / 2</gadget>
<output>20</output>
<gadget id="calculator">20 * 30</gadget>
<output>600</output>
<result>600</result>


已知三角形的底为4cm，高为2cm，求它的面积是多少平方厘米？

Given that the base of the triangle is 4cm and the height is 2cm, what is its area in square centimeters?

<gadget id="calculator">2 / 2</gadget>
<output>1</output>
<gadget id="calculator">4 * 1</gadget>
<output>4</output>
<result>4</result>


张爷爷为贫困生买礼物，他买了4盒钢笔，每盒25支，每支钢笔6元，张爷爷一共花了多少元？

Grandpa Zhang bought gifts for poor students. He bought 4 boxes of pens, 25 pens in each box, and 6 yuan for each pen. How much did Grandpa Zhang spend in total?

<gadget id="calculator">4 * 25 * 6</gadget>
<output>600</output>
<result>600</result>


一箱啤酒24瓶，一辆汽车装260箱，共有多少瓶啤酒？

There are 24 bottles of beer in a box, and 260 boxes in a car. How many bottles of beer are there?

<gadget id="calculator">24 * 260</gadget>
<output>6_240</output>
<result>6_240</result>


甲乙两个学生原计划每天自学的时间相同，若甲每天自学时间增加40分钟，乙每于自学时间减少40分钟，则乙5天的自学时间仅等于甲1天的自学时间，求甲乙原订每天自学时间是多少？(用算术、方程两种方法解答)

Students A and B originally planned to spend the same amount of time on self-study each day. If A increases 40 minutes of self-study time each day, and B reduces 40 minutes of self-study time each day, B’s 5-day self-study time is only equal to A’s 1-day self-study time. How much time do you spend on self-study every day? (Solve by two methods of arithmetic and equation)

<gadget id="calculator">40 + 40</gadget>
<output>80</output>
<gadget id="calculator">5 - 1</gadget>
<output>4</output>
<gadget id="calculator">80 / 4</gadget>
<output>20</output>
<gadget id="calculator">20 + 40</gadget>
<output>60</output>
<result>60</result>


小强要清点盒子中的画片，他叫来小红帮忙，两人同时开始数．小强比小红动作快，小强数5张的时间小红只数3张，但小强数到第30张时忘了数到几，只好把数过的画片全部放回盒中，再从头开始数，当小强数到第120张时，盒子里恰好剩下2张画片．盒子里原来有多少张画片？

Xiaoqiang wanted to count the pictures in the box, he called Xiaohong to help, and they started counting at the same time. Xiaoqiang moves faster than Xiaohong. When Xiaoqiang counted 5 pictures, Xiaohong only counted 3 pictures. But when Xiaoqiang counted to the 30th picture, he forgot how many pictures he had counted, so he had to put all the pictures he had counted back into the box and start counting from the beginning , when Xiaoqiang counted to the 120th picture, there were exactly 2 pictures left in the box. How many pictures were there originally in the box?

<gadget id="calculator">30 / 5</gadget>
<output>6</output>
<gadget id="calculator">6 * 3</gadget>
<output>18</output>
<gadget id="calculator">120 / 5</gadget>
<output>24</output>
<gadget id="calculator">24 * 3</gadget>
<output>72</output>
<gadget id="calculator">18 + 72 + 120 + 2</gadget>
<output>212</output>
<result>212</result>


小红早晨锻炼身体，如果每天坚持跑500米，从4月5日到4月12日，这几天她一共跑了多少米？

Xiaohong exercises in the morning. If she insists on running 500 meters every day, from April 5th to April 12th, how many meters did she run in total in the past few days?

<gadget id="calculator">500 * 8</gadget>
<output>4_000</output>
<result>4_000</result>


甲、乙二人同时从相距18千米的两地相对而行，甲每小时行走5千米，乙每小时走4千米．如果甲带了一只狗与甲同时出发，狗以每小时8千米的速度向乙跑去，遇到乙立即回头向甲跑去，遇到甲又回头向飞跑去，这样二人相遇时，狗跑了多少千米？

Two people, A and B, are walking towards each other from two places 18 kilometers apart at the same time. A travels 5 kilometers per hour, and B travels 4 kilometers per hour. If A brings a dog and starts at the same time, the dog runs towards B at a speed of 8 kilometers per hour. When it meets B, it immediately turns back and runs to A, and when it meets A, it turns back and runs back. In this way, the two meet How many kilometers did the dog run?

<gadget id="calculator">5 + 4</gadget>
<output>9</output>
<gadget id="calculator">18 / 9</gadget>
<output>2</output>
<gadget id="calculator">2 * 8</gadget>
<output>16</output>
<result>16</result>


一种股票，前天的价格是10元，昨天比前天下跌了10%，今天比昨天上涨了10%，今天与前天相比，是上涨了还是下跌了？幅度或下跌是百分之几？

A stock whose price the day before yesterday was 10 yuan, fell 10% yesterday from the day before yesterday, and rose 10% today from yesterday. Compared with the day before yesterday, did it rise or fall? How much is the range or drop?

<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">1 + (1/10)</gadget>
<output>11/10 = around 1.1</output>
<gadget id="calculator">10 * (9/10) * (11/10)</gadget>
<output>99/10 = around 9.9</output>
<gadget id="calculator">10 - (99/10)</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">(1/10) / 10</gadget>
<output>1/100 = around 0.01</output>
<result>1/100 = around 0.01</result>


一块橡皮的体积是8立方厘米，高2厘米，底面积是多少平方厘米．

The volume of an eraser is 8 cubic centimeters, the height is 2 centimeters, what is the area of the base in square centimeters?

<gadget id="calculator">8 / 2</gadget>
<output>4</output>
<result>4</result>


96、88、95这三个数的平均数多少．

What is the average of the three numbers 96, 88, and 95?

<gadget id="calculator">96 + 88 + 95</gadget>
<output>279</output>
<gadget id="calculator">279 / 3</gadget>
<output>93</output>
<result>93</result>


一桶水可倒满10个同样大的碗或12个同样大的杯子，倒入2碗水和7杯水在空桶内，这时水的体积占桶容积的((())/(()))．

A bucket of water can fill 10 bowls of the same size or 12 cups of the same size. Pour 2 bowls of water and 7 cups of water into the empty bucket. At this time, the volume of water accounts for ((())/( ())).

<gadget id="calculator">41 / 60</gadget>
<output>41/60 = around 0.683333</output>
<result>41/60 = around 0.683333</result>


一种商品原价780元，如打八折出售，那么价格降价多少．

The original price of a commodity is 780 yuan. If it is sold at a 20% discount, how much will the price be reduced?

<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>
<result>1/5 = around 0.2</result>


小马虎在计算1.25加上一个一位小数时，错误地把数的末位对齐，算出的结果是1.84，正确的计算结果是多少．

When the little sloppy calculated 1.25 plus a decimal, he mistakenly aligned the last digit of the number, and the calculated result was 1.84. What is the correct calculation result?

<gadget id="calculator">1.84 - 1.25</gadget>
<output>0.59</output>
<gadget id="calculator">0.59 * 10</gadget>
<output>5.9</output>
<result>5.9</result>


一件商品，原价100元，先涨价20%，后降价20%，那么现价是多少元．

If the original price of a commodity is 100 yuan, the price is first increased by 20%, and then the price is reduced by 20%, what is the current price?

<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">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">100 * (6/5) * (4/5)</gadget>
<output>96</output>
<result>96</result>


一名老师和20名同学在玩捉迷藏的游戏，如果老师捉到女同学的可能性大，那么女同学至少要多少名．

A teacher and 20 classmates are playing a game of hide and seek. If the possibility of the teacher catching female classmates is high, how many female classmates should there be at least?

<gadget id="calculator">20 / 2</gadget>
<output>10</output>
<gadget id="calculator">10 + 1</gadget>
<output>11</output>
<result>11</result>


修一条水渠，第一周的长度是未修长度的25%，第二周又修了840米，这两周修的长度等于总长度的(3/8)．第一周修了多少米？

To build a canal, the length of the first week is 25% of the unrepaired length, and 840 meters are repaired in the second week. The length of these two weeks is equal to (3/8) of the total length. How many meters did you repair in the first week?

<gadget id="calculator">7 / 15</gadget>
<output>7/15 = around 0.466667</output>
<gadget id="calculator">840 / (7/15)</gadget>
<output>1_800</output>
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>
<gadget id="calculator">(1/4) / (5/4)</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">1_800 * (1/5)</gadget>
<output>360</output>
<result>360</result>


一个水池有甲进水管和乙出水管，单独开甲管10分钟可以注满水池，单独开乙管15分钟可以把满池水放尽．一次，由于工作人员的疏忽，在打开甲管后若干分钟才匆忙关闭乙管，又过了相同的时间才注满全池，造成了浪费．问甲管一共注水多少时间？

pool has a water inlet pipe A and a water outlet pipe B. If pipe A is opened alone for 10 minutes, the pool will be filled, and if pipe B is opened for 15 minutes alone, the pool will be completely drained. Once, due to the negligence of the staff, the pipe B was closed in a hurry several minutes after opening the pipe A, and it took the same time to fill the whole pool, which caused waste. How long did it take for the A pipe to be filled with water?

<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">(1/10) * 2</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">1 / 15</gadget>
<output>1/15 = around 0.066667</output>
<gadget id="calculator">(1/5) - (1/15)</gadget>
<output>2/15 = around 0.133333</output>
<gadget id="calculator">1 / (2/15)</gadget>
<output>15/2 = around 7.5</output>
<gadget id="calculator">(15/2) * 2</gadget>
<output>15</output>
<result>15</result>


小明从家到学校要走975米，他3分钟走了225米，照这样计算，小明到学校还要走几分钟？

Xiao Ming has to walk 975 meters from home to school, and he walked 225 meters in 3 minutes. According to this calculation, how many minutes will Xiao Ming have to walk to school?

<gadget id="calculator">975 - 225</gadget>
<output>750</output>
<gadget id="calculator">225 / 3</gadget>
<output>75</output>
<gadget id="calculator">750 / 75</gadget>
<output>10</output>
<result>10</result>


一天乔巴开船出游，逆流而上，船在静水中的速度为每小时15千米，水流速度为每小时3千米．船开出5小时后发动机突然坏了．船失去了动力，顺流漂回．那么再过多少小时可怜的乔巴又回到了出发地．

One day, Chopper was traveling in a boat, going upstream, the speed of the boat in still water was 15 kilometers per hour, and the speed of the current was 3 kilometers per hour. Five hours after the boat sailed, the engine suddenly broke down. The boat lost power and drifted back down the current. So how many hours later, poor Chopper returned to the starting point.

<gadget id="calculator">15 - 3</gadget>
<output>12</output>
<gadget id="calculator">5 / 3</gadget>
<output>5/3 = around 1.666667</output>
<gadget id="calculator">12 * (5/3)</gadget>
<output>20</output>
<result>20</result>


把一个分数约分，用2约2次，用3约一次，用5约一次，得到(3/4)，原分数是多少．

Divide a fraction, use 2 for 2 times, 3 for 1 time, and 5 for 1 time to get (3/4). What is the original fraction?

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>
<result>3/4 = around 0.75</result>


一个长方体木块长6dm，横截面是一个边长为4dm的正方形，这个长方体可以切成多少个1dm的小正方体．

A cuboid with a length of 6dm and a cross-section of a square with sides of 4dm can be cut into how many small cubes of 1dm.

<gadget id="calculator">6 / 1</gadget>
<output>6</output>
<gadget id="calculator">4 / 1 / 1</gadget>
<output>4</output>
<gadget id="calculator">6 * 4 * 4</gadget>
<output>96</output>
<result>96</result>


有两个不同的质数，它们的和是20，积是51．这两个质数较大的一个是多少．

There are two different prime numbers whose sum is 20 and whose product is 51. What is the larger of these two prime numbers?


3辆汽车7天节约汽油33.6千克，照这样计算，每辆汽车平均每天节约汽油多少千克？

3 cars save 33.6 kilograms of gasoline in 7 days. According to this calculation, how many kilograms of gasoline are saved on average per car per day?

<gadget id="calculator">33.6 / 7 / 3</gadget>
<output>1.6</output>
<result>1.6</result>


兰州拉面的制作步骤是：将一个面团先搓成圆柱形面棍，长1.5米，然后对折拉长到1.5米，再对折拉长到1.5米…照这样继续下去，最后拉出的面棍粗细仅有原来面棍的1/64，那么最后面条师傅拉出的这些面条的总长度有多少米．

The production steps of Lanzhou hand-pulled noodles are: knead a piece of dough into a cylindrical noodle stick with a length of 1.5 meters, then fold it in half and stretch it to 1.5 meters, and then fold it in half and stretch it to 1.5 meters...Continuing in this way, the thickness of the noodle stick drawn out is finally It is only 1/64 of the original noodle stick, so how many meters is the total length of the noodles pulled out by the noodle master at the end?

<gadget id="calculator">1 / 4_096</gadget>
<output>1/4_096 = around 0.000244</output>
<gadget id="calculator">1.5 / (1/4_096)</gadget>
<output>6_144</output>
<result>6_144</result>


一个等腰梯形的周长是30厘米，每条腰和高分别是8厘米和6.5厘米，求这个梯形的面积是多少？

The perimeter of an isosceles trapezoid is 30 cm, each waist and height are 8 cm and 6.5 cm respectively, what is the area of this trapezoid?

<gadget id="calculator">8 * 2</gadget>
<output>16</output>
<gadget id="calculator">30 - 16</gadget>
<output>14</output>
<gadget id="calculator">6.5 / 2</gadget>
<output>3.25</output>
<gadget id="calculator">14 * 3.25</gadget>
<output>45.5</output>
<result>45.5</result>


一堆煤，如果每天烧24千克，可以烧50天．现在每天烧30千克，可以烧多少天？(用比例解)

A pile of coal, if burned 24 kg per day, can be burned for 50 days. Now burn 30 kilograms per day, how many days can you burn? (Solve with ratio)

<gadget id="calculator">24 * 50</gadget>
<output>1_200</output>
<gadget id="calculator">1_200 / 30</gadget>
<output>40</output>
<result>40</result>


24与15的差去除396，所得的商再加上77，结果是多少？

What is the result of dividing 396 from the difference between 24 and 15 and adding 77 to the resulting quotient?

<gadget id="calculator">24 - 15</gadget>
<output>9</output>
<gadget id="calculator">396 / 9</gadget>
<output>44</output>
<gadget id="calculator">44 + 77</gadget>
<output>121</output>
<result>121</result>


一个数的小数点向右移动一位，比原来大19.8，原来的数是多少．

The decimal point of a number is moved one place to the right, which is 19.8 larger than the original one. What is the original number?

<gadget id="calculator">10 - 1</gadget>
<output>9</output>
<gadget id="calculator">19.8 / 9</gadget>
<output>2.2</output>
<result>2.2</result>


一个小数的小数点向左移动了一位，所得的数比原来的数小3.24，原来的小数是多少．

The decimal point of a decimal is moved one place to the left, and the resulting number is 3.24 smaller than the original number. What is the original decimal number?

<gadget id="calculator">1 / 10</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">3.24 / (9/10)</gadget>
<output>3.6</output>
<result>3.6</result>


把一个数的数字顺序颠倒过来得到的数称为这个数的逆序数，比如89的逆序数为98．如果一个两位数等于其逆序数与1的平均数，这个两位数是多少．

The number obtained by reversing the numerical order of a number is called the reverse ordinal number of this number, for example, the reverse ordinal number of 89 is 98. If a two-digit number is equal to the average of its inverse and 1, what is the two-digit number.


数学家维纳是控制论的创始人．在他获得哈佛大学博士学位的授予仪式上，有人看他一脸稚气的样子，好奇地询问他的年龄．维纳的回答很有趣，他说："我的年龄的立方是一个四位数，年龄的四次方是一个六位数，这两个数刚好把0-9这10个数字全都用上了，不重也不漏，"那么，维纳这一年多少岁，(注：数a的立方等于a*a*a，数a的四次方等于a*a*a*a)

Mathematician Wiener is the founder of cybernetics. At the conferring ceremony of his Ph.D. from Harvard University, someone looked at his childish look and asked his age curiously. Weiner's answer is very interesting. He said: "The cube of my age is a four-digit number, and the fourth power of my age is a six-digit number. These two numbers just use all the 10 numbers from 0-9. , neither heavy nor missing, "So, how old is Wiener this year, (Note: the cube of the number a is equal to a*a*a, and the fourth power of the number a is equal to a*a*a*a)


一项工程，甲乙合作12天完成，甲独做20天完成，乙独做多少天完成．

A project can be completed in 12 days by A and B in cooperation, A can complete it in 20 days alone, and how many days can B do it alone.

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>
<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>
<gadget id="calculator">(1/12) - (1/20)</gadget>
<output>1/30 = around 0.033333</output>
<gadget id="calculator">1 / (1/30)</gadget>
<output>30</output>
<result>30</result>


一辆客车和一辆货车分别从甲、乙两地同时相向开出，货车的速度是客车的(4/5)，货车行了全程的(1/4)后，再行28千米与客车相遇．甲乙两地相距多少千米？

passenger car and a truck depart from places A and B in opposite directions at the same time. The speed of the truck is (4/5) that of the passenger car. meet. How many kilometers are there between A and B?

<gadget id="calculator">4 + 5</gadget>
<output>9</output>
<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">(4/9) - (1/4)</gadget>
<output>7/36 = around 0.194444</output>
<gadget id="calculator">28 / (7/36)</gadget>
<output>144</output>
<result>144</result>


三个连续自然数的积是2730，这三个数的和是多少．

The product of three consecutive natural numbers is 2730, what is the sum of these three numbers.

<gadget id="calculator">2 * 7</gadget>
<output>14</output>
<gadget id="calculator">3 * 5</gadget>
<output>15</output>
<gadget id="calculator">13 + 14 + 15</gadget>
<output>42</output>
<result>42</result>


长方体不同的三个面的面积分别为10平方分米，6平方分米，15平方分米，这个长方体的表面积是多少平方分米．

The areas of the three different faces of a cuboid are 10 square decimeters, 6 square decimeters, and 15 square decimeters. What is the surface area of this cuboid?

<gadget id="calculator">10 + 6 + 15</gadget>
<output>31</output>
<gadget id="calculator">31 * 2</gadget>
<output>62</output>
<result>62</result>


平行四边形相邻两边各增加(1/4)，所得的平行四边形的面积比原来增加了多少．

If the two adjacent sides of the parallelogram are increased by (1/4), how much will the area of the resulting parallelogram increase from the original.

<gadget id="calculator">9 / 16</gadget>
<output>9/16 = around 0.5625</output>
<result>9/16 = around 0.5625</result>


一堆货物(5/8)吨，第一次运走它的(1/5)，第二次运走(1/5)吨，还剩下多少吨？

A pile of goods (5/8) tons, (1/5) of it is removed for the first time, and (1/5) tons is removed for the second time, how many tons are left?

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">(5/8) * (1/5)</gadget>
<output>1/8 = around 0.125</output>
<gadget id="calculator">(5/8) - (1/8) - (1/5)</gadget>
<output>3/10 = around 0.3</output>
<result>3/10 = around 0.3</result>


小明的身高是1.3米，妈妈的身高是1.6米．妈妈比小明高多少米？

Xiaoming's height is 1.3 meters, and mother's height is 1.6 meters. How much is mother taller than Xiaoming?

<gadget id="calculator">1.6 - 1.3</gadget>
<output>0.3</output>
<result>0.3</result>


把一个周长是4.32厘米的正方形，剪成一个最大的圆，圆的直径是多少厘米．

Cut a square with a circumference of 4.32 cm into the largest circle, what is the diameter of the circle in cm?

<gadget id="calculator">4.32 / 4</gadget>
<output>1.08</output>
<result>1.08</result>


小红做了5道数学题，错了1道，正确率是多少

Xiaohong did 5 math problems and got 1 wrong. What is the correct rate?

<gadget id="calculator">4 + 1</gadget>
<output>5</output>
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">100 / 100</gadget>
<output>1</output>
<gadget id="calculator">(4/5) * 1</gadget>
<output>4/5 = around 0.8</output>
<result>4/5 = around 0.8</result>


一种电脑，每台如果减少定价的10%出售，可盈利225元．如果减少定价的20%出售，就亏本120元，这种电脑每台进价是多少元？

kind of computer, if each computer is sold with a reduction of 10% of the price, the profit can be 225 yuan. If you sell it with a 20% reduction in the price, you will lose 120 yuan. How much is the purchase price of each computer?

<gadget id="calculator">225 + 120</gadget>
<output>345</output>
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">(1/5) - (1/10)</gadget>
<output>1/10 = around 0.1</output>
<gadget id="calculator">345 / (1/10)</gadget>
<output>3_450</output>
<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>
<gadget id="calculator">3_450 * (9/10)</gadget>
<output>3_105</output>
<gadget id="calculator">3_105 - 225</gadget>
<output>2_880</output>
<result>2_880</result>


公园的过道两边要摆上盆花，如果每一边都放342盆，两边一共放多少盆？

There are potted flowers on both sides of the aisle in the park. If there are 342 pots on each side, how many pots are placed on both sides?

<gadget id="calculator">342 * 2</gadget>
<output>684</output>
<result>684</result>


贝贝看一本180页的故事书，第一天看了全书的(1/6)，第二天看了余下的(1/6)，贝贝两天共看了多少页？

Beibei reads a 180-page story book. He reads (1/6) of the whole book on the first day and the rest (1/6) on the second day. How many pages did Beibei read in two days?

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">180 * (1/6)</gadget>
<output>30</output>
<gadget id="calculator">180 - 30</gadget>
<output>150</output>
<gadget id="calculator">150 * (1/6)</gadget>
<output>25</output>
<gadget id="calculator">30 + 25</gadget>
<output>55</output>
<result>55</result>


工人叔叔修路，第一天修了全长的(1/8)，第二天修了全长的(3/8)，还剩全长的几分之几没有修完？

The worker uncle built the road. He repaired the full length (1/8) on the first day and the full length (3/8) on the second day. What fraction of the full length is left?

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>
<gadget id="calculator">1 - (1/8) - (3/8)</gadget>
<output>1/2 = around 0.5</output>
<result>1/2 = around 0.5</result>


广场的中央有一个梅花形的花坛，外圈是五个半圆形，每个半圆形的半径都是2米，这个花坛的周长是多少米？

There is a quincunx-shaped flower bed in the center of the square. The outer circle is five semicircles, and the radius of each semicircle is 2 meters. What is the circumference of this flower bed in meters?

<gadget id="calculator">2 / 2</gadget>
<output>1</output>
<gadget id="calculator">2 * 3.14 * 1 * 5</gadget>
<output>31.4</output>
<result>31.4</result>


在学校组织的抢答赛中共有20道题，规定：答对一道记作"+10"分，答错一道记作"-10"分，不答记"0"分．小明答错3道，2道未答，小明最后得多少分？

There are 20 questions in the quick answer competition organized by the school. It is stipulated that: one correct answer will be scored as "+10", one wrong answer will be scored as "-10", and no answer will be scored as "0". Xiao Ming answered 3 questions incorrectly and failed to answer 2 questions. How many points did Xiao Ming get in the end?

<gadget id="calculator">20 - 3 - 2</gadget>
<output>15</output>
<gadget id="calculator">15 * 10</gadget>
<output>150</output>
<gadget id="calculator">3 * 10</gadget>
<output>30</output>
<gadget id="calculator">150 - 30</gadget>
<output>120</output>
<result>120</result>


<gadget id="calculator">120 / 100</gadget>
<output>6/5 = around 1.2</output>
<gadget id="calculator">11 + (6/5)</gadget>
<output>61/5 = around 12.2</output>
<gadget id="calculator">(61/5) / 3.4</gadget>
<output>3.588235</output>
<result>3.588235</result>


李刚家要栽种一批树苗，这种树苗的成活率一般为80%，如果要栽活1000棵树苗，那么至少应栽多少棵．

Li Gang's family wants to plant a batch of saplings. The survival rate of such saplings is generally 80%. If 1,000 saplings are to be planted, how many should be planted at least.

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>
<gadget id="calculator">1_000 / (4/5)</gadget>
<output>1_250</output>
<result>1_250</result>


花店老板准备把一些玫瑰花放在花瓶里面，如果每瓶放入6朵玫瑰，那么剩下的玫瑰花正好还能装3瓶，如果每瓶中多放入2朵玫瑰，就会有3个瓶子是空的，一共有玫瑰花多少朵？

The owner of the florist is going to put some roses in a vase. If 6 roses are placed in each vase, then the remaining roses can fit 3 vases. If 2 more roses are placed in each vase, there will be 3 roses. If each bottle is empty, how many roses are there in total?

<gadget id="calculator">6 * 3</gadget>
<output>18</output>
<gadget id="calculator">6 + 2</gadget>
<output>8</output>
<gadget id="calculator">8 * 3</gadget>
<output>24</output>
<gadget id="calculator">18 + 24</gadget>
<output>42</output>
<gadget id="calculator">42 / 2</gadget>
<output>21</output>
<gadget id="calculator">6 * 21</gadget>
<output>126</output>
<gadget id="calculator">126 + 18</gadget>
<output>144</output>
<result>144</result>


如果算式175*225*275*★的积的末尾六位数字都是"0"，那么"★"所代表的数最小是多少．

If the last six digits of the product of the formula 175*225*275*★ are all "0", then what is the smallest number represented by "★".

<gadget id="calculator">2 * 2 * 2 * 2 * 2 * 2</gadget>
<output>64</output>
<result>64</result>


在一个长9厘米，周长26厘米的长方形内画一个最大的三角形，这个三角形的面积是多少平方厘米．

Draw the largest triangle in a rectangle with a length of 9 cm and a circumference of 26 cm. What is the area of this triangle in square centimeters?

<gadget id="calculator">26 / 2</gadget>
<output>13</output>
<gadget id="calculator">13 - 9</gadget>
<output>4</output>
<gadget id="calculator">4 / 2</gadget>
<output>2</output>
<gadget id="calculator">9 * 2</gadget>
<output>18</output>
<result>18</result>


修路队要修一段公路．第一天修了全长的25%，第二天修了70米，这时已修的和未修的长度比是3：2，这段公路有多长？

The road repair team is going to build a section of road. 25% of the total length was repaired on the first day, and 70 meters were repaired on the second day. At this time, the ratio of the length of the repaired to the unrepaired length is 3:2. How long is this section of road?

<gadget id="calculator">3 + 2</gadget>
<output>5</output>
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">(3/5) - (1/4)</gadget>
<output>7/20 = around 0.35</output>
<gadget id="calculator">70 / (7/20)</gadget>
<output>200</output>
<result>200</result>


一个养禽专业户养鸡980只，养的鸡比鸭的2倍多20只．养鸭多少只？

A professional poultry farmer raises 980 chickens, 20 chickens twice as many as ducks. How many ducks do you have?

<gadget id="calculator">980 - 20</gadget>
<output>960</output>
<gadget id="calculator">960 / 2</gadget>
<output>480</output>
<result>480</result>


Calculate with a simple method: 333333*333333.


从4个男生，5个女生中选一名班长和副班长，共有多少种不同的选法？(班长和副班长必须由男生和女生搭配)

How many different ways are there to choose a squad leader and deputy squad leader from 4 boys and 5 girls? (Squad leader and deputy squad leader must be matched by boys and girls)

<gadget id="calculator">4 * 5</gadget>
<output>20</output>
<result>20</result>


某学校六年级有418人，六年级的人数比五年级多10%，五年级比六年级少多少人？

There are 418 students in the sixth grade in a school, the number of sixth grade is 10% more than that of fifth grade, and how many fewer students are in fifth grade than sixth grade?

<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">418 / (11/10)</gadget>
<output>380</output>
<gadget id="calculator">418 - 380</gadget>
<output>38</output>
<result>38</result>


某工厂人数减少20%，产量却增长40%，则生产效率比原来增加了多少

If the number of people in a factory decreases by 20%, but the output increases by 40%, how much does the production efficiency increase from the original?

<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>
<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</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">(7/5) / (4/5)</gadget>
<output>7/4 = around 1.75</output>
<gadget id="calculator">(7/4) - 1</gadget>
<output>3/4 = around 0.75</output>
<result>3/4 = around 0.75</result>


打字员打一部书稿．第一天打了12页，第二天打了13页，这两天打的页数占这部书稿的(5/12)．这部书稿有多少页？(用方程和算术方法解答)

A typist types a manuscript. I typed 12 pages on the first day and 13 pages on the second day. The number of pages typed in these two days accounted for (5/12) of this manuscript. How many pages does this manuscript have? (Solve with equations and arithmetic methods)

<gadget id="calculator">12 + 13</gadget>
<output>25</output>
<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>
<gadget id="calculator">25 / (5/12)</gadget>
<output>60</output>
<result>60</result>


等底等高的圆锥和圆柱，圆柱体积是(1/3)立方米，圆锥体积是多少立方米．

A cone and a cylinder with the same base and height, the volume of the cylinder is (1/3) cubic meter, how many cubic meters is the volume of the cone.

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>
<gadget id="calculator">(1/3) * (1/3)</gadget>
<output>1/9 = around 0.111111</output>
<result>1/9 = around 0.111111</result>


一台拖拉机3小时耕地7.5公顷，照这样计算，再耕7小时，一共可以耕地多少公顷？(用比例解)

A tractor can plow 7.5 hectares of land in 3 hours. According to this calculation, how many hectares of land can be plowed for another 7 hours? (Solve with ratio)

<gadget id="calculator">7.5 / 3</gadget>
<output>2.5</output>
<gadget id="calculator">2.5 * 7</gadget>
<output>17.5</output>
<gadget id="calculator">2.5 * 3</gadget>
<output>7.5</output>
<gadget id="calculator">17.5 + 7.5</gadget>
<output>25</output>
<result>25</result>


在12：8中，如果前项减少3，要使比值不变，后项应减少多少

In 12:8, if the former term is reduced by 3, how much should the latter term be reduced to keep the ratio constant


甲、乙两车从A、B两地相对开出，甲车开出2小时后，乙车开出，又经过3小时，两车相遇．已知甲车每小时行45千米，乙车每小时行55千米．求A、B两地的距离．

Two cars, A and B, leave opposite places A and B. 2 hours after A leaves, B leaves, and after another 3 hours, the two cars meet. It is known that car A travels 45 kilometers per hour, and car B travels 55 kilometers per hour. Find the distance between A and B.

<gadget id="calculator">2 + 3</gadget>
<output>5</output>
<gadget id="calculator">5 * 45</gadget>
<output>225</output>
<gadget id="calculator">3 * 55</gadget>
<output>165</output>
<gadget id="calculator">225 + 165</gadget>
<output>390</output>
<result>390</result>


(3/5)分母扩大4倍，要使这个数的大小不变，分子应该是多少．

(3/5) The denominator is enlarged by 4 times, what should be the numerator to keep the size of this number constant.

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


What is the value of 1.8/(3.6+(1-(5/8))*32). How many

<gadget id="calculator">5 / 8</gadget>
<output>5/8 = around 0.625</output>
<gadget id="calculator">1 - (5/8)</gadget>
<output>3/8 = around 0.375</output>
<gadget id="calculator">(3/8) * 32</gadget>
<output>12</output>
<gadget id="calculator">3.6 + 12</gadget>
<output>15.6</output>
<gadget id="calculator">1.8 / 15.6</gadget>
<output>0.115385</output>
<result>0.115385</result>


一件工作，甲单独完成需要12天，乙的工作效率是甲的2倍，两人同时合做，几天能完成这项工程？

It takes 12 days for A to complete a job alone, and B’s work efficiency is twice that of A. If they work together at the same time, how many days can they complete the project?

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>
<gadget id="calculator">(1/12) * 2</gadget>
<output>1/6 = around 0.166667</output>
<gadget id="calculator">(1/12) + (1/6)</gadget>
<output>1/4 = around 0.25</output>
<gadget id="calculator">1 / (1/4)</gadget>
<output>4</output>
<result>4</result>