How many people are there in the math group?
2. A batch of 480 tons of coal has used 1/4. How many tons are left?
A car travels 60 kilometers in 3/5 hours. How many kilometers can you travel in four hours at this speed?
4. A rectangular playground is150m long and 2/3 wide. What is the area of this playground?
5. The original price of a TV set is 2500 yuan, and now the price is reduced 1/5. What's the current price?
6. A car travels 60 kilometers in 3/5 hours. How many kilometers can you travel in four hours at this speed?
7. There are 144 people on the playground, of which 2/9 are long jumpers and 1/2 are athletes. How many people play ball?
8. Xiaoming practiced the word 100 this morning and 140 this afternoon. The number of words practiced today is equivalent to 2/3 of yesterday's. How many words did Xiaoming practice yesterday?
9. The store shipped 800 plastic boxes, bought 1/4 in the morning and sold 2/5 in the afternoon. How much is it a day?
10.800 bags of cement were transported to the construction site, with 2/5 used in the first week and 3/8 used in the second week. How many bags are left?
1 1. Wang Ming read a story book. On the first day, he read 1/4. The next day, he read 7/20 of the book. The next day, he read 15 more pages than the first day. How many pages does this story book have?
12. A book, I have read 3/5 of this book, and there are 150 pages left. How many pages are there in this book?
13. Xiaohong reads a book. On the first day, she read 1/5. The next day, she read 3/8 of the book. At this point, there are 5 1 pages left. How many pages are there in this book?
14, one road has been repaired 1/6, and 600 meters has been repaired just half way. How long is this road?
15, Xiaolan reads a book. On the first day, she read 1/6 of the whole book, and on the second day, she read 1/5 of the whole book, which was exactly 60 pages. How many pages did you read on the first day?
16. Half a barrel of oil is poured, and 2/5 of the oil is poured, leaving 15 kg. How many kilograms can this barrel hold?
17, construction of 2400 meters road. The full-length 1/3 was built on the first day, and the full-length 1/4 was built on the second day. How many meters were built on the first day than on the second?
18, road repair. Full-length 1/3 on the first day and 1/4 on the second day. The first day was 200 meters more than the second day.
How long is this road?
19. Grade 5 students in Hongxing Primary School 120, of which 4/ 15 students participated in the science and technology group and 3/8 students participated in the literature and art group. How many students are there in the two groups?
20. The weight of hedgehog is just equal to 4/5 of the weight of white rabbit. The weight of this hedgehog is 2 kg, so how much is the weight of the white rabbit?