2.*** There are 200 pupils, divided into 5 teams, and each team is divided into 8 groups. How many people are in each group?
3. Buy 750 books and put them in 5 cabinets, each with 3 floors. How many books are there on the first floor?
4. How many bugs does a titmouse eat in April (30 days)?
Shao Shao ran three times a day for 400 meters. He ran for five days. How many meters did he run?
6. A car ran 960 meters in 8 hours. When it came back, it ran at the same speed for six hours. How many meters did it take to return?
The distance between a and b is 465 kilometers. A car travels from A to B at 60 kilometers per hour, and then accelerates to 15 kilometers per hour. It takes * * * seven hours to get to B. How many hours did you drive at 60 kilometers per hour?
2. There are several chickens and rabbits in the cage, which are *** 100 feet. If the chicken is replaced by a rabbit and the rabbit is replaced by a chicken, it will have 92 feet. How many rabbits and chickens are there in the cage?
3. Spiders have eight legs, dragonflies have six legs and two pairs of wings, and cicadas have six legs and 1 pairs of wings. Now these three kinds of bugs have 18, 1 18 legs and 20 pairs of wings. How many bugs are there in each species?
4. In the activity of learning from Lei Feng, students * * * did 240 good deeds, college students each did 8 good deeds, and primary school students each did 3 good deeds, with an average of 6 good deeds. How many pupils took part in this activity?
5. A class of 42 students participated in tree planting, with an average of 3 trees planted by boys and 2 trees planted by girls. It is known that boys have 56 more trees than girls, and the sum of men and women is 1. The farm tool factory will produce 20,640 small farm tools, half of which will be completed in 120 days. How many pieces are produced on average every day? A shoe factory produced 3860 pairs of men's shoes, twice as many as women's shoes. How many pairs of women's shoes were produced?
3. To build the canal, 840m has been built, and120m has not been built. How many times have you repaired it?
4.38 militiamen practiced shooting, and one hit the ring of 1026. How many times did each militia fight on average?
The railway from Nanjing to Jinan is 540 kilometers long. A train leaves from Nanjing and arrives in 9 hours. How many kilometers does this train travel per hour on average?
6. In the feeding group, 64 white rabbits were raised, which was four times that of gray rabbits. How many gray rabbits have you raised?
7. The speed of the car going up the mountain is 36 kilometers per hour, it takes 5 hours to reach the top of the mountain, and it only takes 4 hours to go back when going down the mountain. How many kilometers does the car travel per hour on average?
8. The experimental primary school should buy a book 12 yuan for each of the third and fourth grade students. It is known that there are 145 students in grade three and 155 students in grade four. How much are the two grades?
9. Bouquet 30 yuan, buy 5 bouquets and get one free. Aunt Wang buys five strings at a time. How much cheaper is each bundle?
10. Each 12 kg of coal can generate 24 kWh of electricity. If a factory saves 1440 kg of coal every day, how many kwh of electricity can it generate?
1 1. Wuhan battery factory can produce 2400 batteries a day, and every 600 batteries can be packed in a box. How many boxes of batteries can be produced this day?