1. Kindergarten has 120, of which 1/5 is yellow and 1/4 is red. How much is yellow less than red?

2. The factory has 120 tons of cement. First day shipment 1/4, second day shipment 2/5. How many tons were shipped the next day?

There are 640 Jin apples in the fruit shop, and pears are 4/5 of apples. How many kilograms are pears and apples?

4. Xiaogang has 20 marbles, and Xiao Qiang's marbles are Xiaogang's 1/5. How many marbles do they have?

5. The school has planted 120 trees, of which 2/5 are sycamore trees, 1/4 are elm trees, and the rest are camphor trees. How many have you planted?

6. The bookstore has a batch of 4,200 new books. It sold 1/4 in the first week and 2/5 in the second week. How many books are not sold?

7. A barrel of oil is 6 kilograms. All the products used for the first time were 2/9, and all the products used for the second time were 1/3. How many kilograms are left?

8. A book has 240 pages. On the first day, I read 1/4, and on the second day, I read 3/8 books. How many pages have I read in two days?

9. A story book has 320 pages. I watched 3/8 on the first day and 1/5 on the second day. Which page should the third day start from?

10 and 5 have a total of 250 people, of whom 4\5 go to plant trees and the rest 1/5 go to the station for cleaning. How many people cleaned up?

1 1, a wire is 48 meters long. Use 1/3 of the total length for the first time, and use the remaining 3/5 for the second time. How many meters did it take for the second time?

12. There are 25 tons of rice. I bought 1/4 tons on the first day, and the rest 1/4 on the first day. How many tons of rice did I buy the next day?

13. This grain store has 4000 kilograms of rice. The first week sold 1/2 tons, and the second week sold the remaining 3/5. How many Jin of rice did you sell the next day?

14, there is a pile of 60 tons of coal, 5 tons more than 1/4. How many tons were used?

15, apples weigh 2600 Jin, and pears are less than 7/ 13 of apples 100 Jin. How many kilograms of pears are there?

16. There are 234 female workers in the factory, and 32 male workers are less than 2/3 of the female workers. How many male workers are there in the factory?

17. build an expressway, the first day is 3/ 10 km, the second day is 2/5 km, and the third day is 5/6 of the previous two days. How many kilometers do you have to walk in three days?

18. Last month, the washing machine factory planned to produce 1500 washing machines. The result exceeds the output115. How many washing machines exceed the standard?

19, there are 2,600 Jin of oranges in the fruit shop. Apples are 9/20 less than oranges. How many Jin are apples less than oranges?

20. The school used 560 kilograms of coal in September, and the planned coal consumption in1October was 9/10, but the actual coal consumption in 10/2 was less than planned. /kloc-How much coal consumption was saved in October?

2 1. There are 680 students in a school, the sixth grade accounts for the whole school 1/4, and the number of boys in the sixth grade accounts for 9/ 17. How many girls are there in the sixth grade?

22. There are 256 students in grade six, 5/8 of whom have participated in math interest groups, and 2/5 of the students who have participated in math interest groups are boys. What percentage of the total number of girls want to join the math group in the sixth grade?

23. Last year, the bicycle factory planned to produce 360,000 bicycles, with 5/9 completed in the first half and 7/9 completed in the second half. As a result, some of them are overproduced. Tens of thousands of bicycles have been overproduced.

B

1. In the school library, literature and art books account for 1/3 and science and technology books account for 1/5. There are 960 known scientific and technical books and literary and artistic books. How many books are there in this library?

2, a wire, the first day with full length 1/6, the second day with full length 1/3, the first day is 30 meters shorter than the second day, how long is this wire?

Car A traveled 84 kilometers from A to B, and the rest accounted for 3/7 of the total length. How many meters is there between A and B?

4. For a wire, the full-length 1/6 was used on the first day, and the full-length 1/3 was used on the second day, leaving 30 meters. How long is the wire?

5. A car drove from A to B 1/8, and then just arrived at 400 kilometers. How many kilometers is it between A and B?

6. A pile of coal was shipped out 1/3 for the first time, 120 tons for the second time, and this pile of coal was just shipped out 1/4 for the third time. How many tons is this pile of coal?

7. Master Xiao Wang has finished processing a batch of parts, and 1/3 has been completed. After making 16, you can complete 2/5 of the total. How many parts are there in this batch?

8. Processing a batch of parts, 4/7 a.m. and 20 p.m., gap 1/7. How many parts are there in this batch?

9. From Dongcheng to Xicheng, it is 3/8 of the whole journey, and it is 16 km from the midpoint of the whole journey. How many kilometers are the two cities apart?

10. A car traveled 28 kilometers from A to B ... 65438+ 0/3 of the whole journey just reached the midpoint. How many kilometers is it between Party A and Party B?