2. The school library bought 480 new books, of which 3\4 are literature books and 2\9 are story books. How many story books are there?

There are 32/kloc-0 pear trees and 400 apple trees in the orchard. These two kinds of fruit trees are equivalent to 7/8 of all fruit trees in the orchard. How many trees are there in the orchard?

4. Dad bought a big watermelon, mom ate 2/8, and peas ate 1/8. How much did they eat?

5. Class 3 (1) and Class 3 (2) water all the young trees in the school. Class 3 (1) poured 3/9. How much did Class 3 (2) pour?

6. A bag of melon seeds weighs1/4kg, which is 2/4kg lighter than a bag of sugar. How much does a bag of melon seeds and a bag of sugar weigh?

7. The ratio of the bottom areas of the two cylindrical containers A and B is 4: 3. The water depth of container A is 4 cm more than that of container B, and then the same amount of water is injected into both containers, which is exactly 25 cm. How many centimeters is the water depth in the original container A?

8. 720 students took part in planting trees. It is known that the ratio of grade six to grade five is 3: 2, and grade six is 80 more than grade four. How many people participated in tree planting in each of the three grades?

9. The ratio of the bottom areas of the two cylindrical containers A and B is 4: 3. The water depth of container A is 4 cm more than that of container B, and then the same amount of water is injected into both containers, which happens to be 25 cm in both containers. How many centimeters is the water depth in the original container A?

10. There are four production teams in the first workshop. One or two teams *** 19 people, two, three and four teams ***35 people. It is known that the number of the second team accounts for the total number of the four production teams. How many people are there in the first workshop

1 1. The school interest classes are divided into two groups. After one-third of the students were transferred from group A to group B, one-fifth of the students in group B were transferred to group A. At this time, there were 24 students in both groups. How many students are there in each group?

12, 4/5 of the number of boys in a class plus the number of girls is exactly 49; Four fifths of the girls plus the boys are 50. How many students are there in this class?

13. A loom weaves half a meter in two minutes. How many meters do you weave per minute on average?

14. There are 36 people reading books in the school library, and girls account for 4/5 of the boys. Later, several girls came. Now the number of girls accounts for 3/4 of the total number. Then some girls came.

15, RMB 2,000 each for Party A and Party B * * *. Party A gives Party B half, and then Party B gives Party A its own 1/3, and then Party A gives Party B its own 1/4. At this time, Party B has more money than Party A. 650 yuan, how much do they have first?

16, a factory * * has workers 1300 people. If we transfer 1/8 male employees and recruit 500 female employees, it means that the number of male employees and female employees is equal. Q: How many people are employed in this factory?

17, a factory * * employees 120, of which female employees account for the whole factory15. Later, this factory recruited some laid-off women workers, accounting for 1/4 of the whole factory. How many employees are there in this factory? How many new employees are recruited?

18. Three groups of students visited the Science Museum in the morning, with 169 students in each group and 2 13 students in the afternoon. How many students come to visit on this day?

19. A Niu eats 32kg of grass every day. How many kilograms of grass do two cows eat in four days?

20. There is a piece of land for growing tomatoes, eggplant and watermelon. How much is watermelon?

2 1. Uncle Li keeps 200 chickens. On the first day, he sold 128 chickens. On average, each chicken can be sold to 9 yuan. How much can Uncle Li sell this day?

The remaining chickens are sold the next day, and every 8 chickens are packed in a cage. How many cages can you hold?

22.48 Students collect insect specimens. Every three students are divided into one group. How many groups can they be divided into?

23. The students want to plant 93 trees, and have already planted 18 trees. The remaining saplings were equally distributed to five groups. How many trees will each group plant?

24. The precipitation in Shanghai in June was 42 mm, less than that in June14 mm. What is the rainfall in June and July?

This toy factory can produce 600 toys per hour. How many toys can it produce from 10 am to 2 pm?

26. Square garden with a side length of 15m. What's its circumference?

27. Put a fence around a rectangular piece of land with a length of16m and a width of 8m. How long is the fence?

28. There are *** 108 children who learn painting in Children's Palace, and the children who learn calligraphy are 36 times less than those who learn painting. How many people study calligraphy in Children's Palace?

29. Each skipping rope is 2 meters long. How many skipping ropes can a 65-meter-long rope cut? How many meters are left?

30. Miss Li bought two badminton rackets, gave them to 70 yuan and took them back to 6 yuan. How much is each badminton racket?

3 1. Xiaoming plans to finish reading a popular science book in 6 days. How many pages does he read on average every day?

32. The students made 80 paper flowers, and tied a bunch of them every five. How many bundles can they play? Tie a bunch of flowers every four. How many bundles can you play?

33. The unit price of an exercise book is 40 cents. With this 5 yuan money, how many such exercise books can Miss Wang buy at most?

34. Xiaohua went to the store to buy drinks, bought five bottles, paid the shop assistant 100 yuan and took them back to 35 yuan. How much is each bottle of drinks?

Students go to the orchard to take part in voluntary labor. There are 40 male students and 38 female students. Every six people are divided into groups. How many groups can a * * * be divided into?

There are 26 boys and 22 girls in Class 3 (2). The class is divided into four teams on average. How many students are there in each team on average? If each student issues 2 math exercise books, how many math exercise books does the whole class need?

There are 18 boys in the school dance team, and the number of girls is twice that of boys. How many men and women are there in the dance team?

38. Nine girls visited the Observatory, and three times as many boys as girls. 1. Is a 40-seat car enough?

39. One batch of goods has already shipped 8 tons, and the rest is five times. How many tons are there in this shipment?

40. Xiaoming bought six sets of sports pictures, each set of 4 yuan, and also bought a red-painted copybook of 15 yuan. How much did Xiaoming spend?

4 1 .1 game 14: 45 and 16: 18. How long did the game last?

42. Students go boating. There are 27 male students and 29 female students, and every four people have a boat. How many boats do I need to rent?

43. Uncle Wang raised 15 geese, with four times as many ducks as geese and 38 more chickens than ducks. How many ducks does Uncle Wang keep? How many chickens are there?

44. A painting, 50 cm long and 30 cm wide. Is it enough to use a piece of wood with a length of 150 cm as a border?

45. Each bag of salt weighs 500 grams. How many grams are there in six bags of salt? How many kilograms?

46. A total of 257 ducks were raised in poultry farms, with 5 ducks in each cage. How many chickens and ducks are raised on this farm?

This factory can produce 406 teddy bears every day. According to this calculation, how many teddy bears can be produced in five days?

48. A truck travels 850 meters per minute, and a car travels 50 meters, which is more than three times that of a truck. How many meters does the car travel per minute?

49. A construction site delivered 180 bags of cement on the first day, and the number of bags delivered on the second day was twice as small as that on the first day, 19 bags. How many bags of cement were delivered the next day?

50. Each truck can carry 4 tons of goods at a time. How many tons of goods can one * * * transport five times with eight such trucks?

5 1. Each person can assemble 14 bicycles every day. According to this calculation, 8 people work for 7 days. A * * *, how many bicycles have been assembled?

52. The army has been reading books for five days, reading 24 pages every day, leaving 10 pages unread. How many pages are there in this book?