-
1: There are 90 table tennis balls for sporting goods, if you pack a box for every two, can it be filled just right? If you fill a box of five, can you fill it exactly? Why?
2=45 boxes 90 5=18 boxes.
A: If you fill a box every two, you can fill it exactly, and if you fill a box every five, you can also fill it exactly. Because 90 is divisible by five.
2: There are 57 balls in the sports store, and every three are packed in a box, can they be filled exactly?
3+19 boxes.
Answer: It can be loaded just right.
3: A and B type a 10,000-word document, A types 115 words per minute, and B types 135 words per minute, can it be completed in a few minutes?
(115+135) = 40 points.
A: You can play in 40 minutes.
Brief introduction. In mathematics teaching, practical problems containing certain mathematical relationships (such as quantitative relations, geometric figure position relations, etc.) are described in words or words, and the problems formed in this way are called practical problems.
Any word problem consists of two parts. The first part is the known condition (referred to as the condition), and the second part is the problem sought (referred to as the problem). The conditions and questions of the application problem form the structure of the application problem.
-
1.A shoe factory has produced 3,860 pairs of men's shoes, which is twice as many as women's shoes.
2.To build a canal, 840 meters have been repaired, and there are still 120 meters that have not been repaired, how many times more than has been repaired?
A militia practiced target shooting, and hit a total of 1026 rings, how many rings did each militia hit on average?
4.The breeding group raised 64 white rabbits, which is 4 times that of gray rabbits, how many gray rabbits were raised?
5.The speed of the car up the mountain is 36 kilometers per hour, it takes 5 hours to reach the summit, and it takes only 4 hours to return the same way when descending. How many kilometers does a car travel on average per hour when going down a mountain?
6.Experimental primary school to:
Students in the third and fourth grades each buy a composition tutorial book for 12 yuan. It is known that there are 145 students in the third grade and 155 people in the fourth grade, how much yuan do you need for the two grades?
7.Wuhan battery factory can produce 2400 batteries a day, and every 600 batteries can be loaded into a box, ask how many boxes of batteries can be produced on this day?
8.The store brought 43 baskets of oranges in the morning and 28 baskets in the afternoon, with an average weight of 52 kilograms per basket.
9.There are 2 classes in the third grade, there are 45 students in each class, and a total of 810 kilograms of vegetables are cut.
10.The school plans to buy 25 computer desks and 25 swivel chairs, each computer desk is 750 yuan, each swivel chair is 250 yuan, and the school has prepared 24,000 yuan, is it enough?
11.An elephant weighs about 5408 kilograms, it weighs 208 times as much as a monkey, how many kilograms does this monkey weigh?
12.If the school brings 1,200 saplings, if 24 are planted in each row, how many rows can be planted?
13.Using a computer to type a 466-word article, Honghong can enter 60 words per minute, and Congcong can record it in 7 minutes. Who's going to enter faster?
14.Uncle Wang's orchard harvested 358 kilograms of apples, 270 kilograms of pears, and 196 kilograms of plums. Apples are 40 kg per box, pears are 30 kg per box, and plums are 20 kg per box. Do the math: How many cartons do you need for each of these fruits?
15.Trees are planted along a 180-meter-long path, one every 20 meters. How many trees do I need to plant?
16.A rectangular vegetable field, 9 meters long and 6 meters wide, this vegetable field has a total of 972 kilograms of vegetables, how many kilograms of vegetables per square meter are collected on average?
17.Grandpa Wang's four cows produce 896 kilograms of milk per week, how much milk does an average cow produce per day?
A car transports 960 bags of cement 3 times, how many bags of cement does each car transport each time?
19.Xiaohong bought 2 boxes of mung bean cakes, weighing a total of 1 kilogram. Each box contains 20 pieces, how many grams does each piece weigh on average?
20.A bus departs from Zhangcun and travels 60 kilometers per hour to reach Lizhuang in 4 hours. It only took 3 hours to arrive. How many kilometers does this car actually travel on average per hour?
Excuse me... I don't have an answer...
-
Hehe. Kids, you're too young.
-
Send it! At least 15 of them.
Let part A have x roots, then part B has (25-x) roots, then. >>>More
When n is an odd number, all the lights cannot be turned off according to the regulations. >>>More
1.A barrel of oil was poured three times, each time with more than 1 kilogram of the remaining half, and finally 7 kilograms left. How many kilograms of oil was in this barrel? >>>More
The additional eight people paid 8*24=192 yuan for the people in front, that is, the people in front saved a total of 192 yuan. And because the people in front of them saved 30-24 = 6 yuan per person, there were a total of 192 6 = 32 people in front of them (each person saved 6 yuan, a total of 192 yuan saved). The total fare is 30*32=960 yuan. >>>More