The track of the sports ground is 400 meters, and Uncle Wang insists on running two and a half laps every day. How many meters does he run every day?
3. Xiaoli walks for about 50 cents. She walked 540 steps from home to school. Calculate, how many meters is it from her home to school?
4. Light blue height 134 cm, Dongdong is 5 cm higher than light blue. How many centimeters is Dongdong tall?
5. There are 257 boys and 235 girls in the third grade of Red Scarf Primary School. There are 387 people who have undergone physical examination. How many people have not had a physical examination?
6. The library has lent out 456 books, and there are 207 books left, and now it has returned 285 books. How many books are there in the library now?
7. Red Scarf Primary School bought 380 balls and 70 soccer balls, and borrowed 423 balls during extracurricular activities. How many balls are left in the school now?
8. Class 3 (2) donated 400 books, with 273 books left. Now it has bought 125 books. How many books are there in Class Three (2)?
9. Dongdong wants to buy a 3 10 yuan scooter, which has been deposited in 200 yuan. If he deposits in 30 yuan every month, a few more months will be enough.
10, the students of Dongfanghong Primary School donated 900 books for Project Hope, including 326 story books, 475 science books and the rest comic books. How many comic books are there?
1 1. The side length of a square is 8 cm. If you increase its side length by10cm, how many centimeters will its perimeter increase?
12. The circumference of the rectangular playground is 400 meters, and the length is three times the width. What is the length and width of this playground?
13, with two identical rectangles, 8 decimeters long and 4 decimeters wide. If you put them together into a rectangle, what is the circumference of the rectangle? What is the circumference of a square if it is spelled into a square?
14, Dongdong borrowed a 40-page science and technology book and returned it a week later. He intends to read six pages every day. Can he return it on time?
/kloc-Class 0/5 and Class 3 (2) have 44 people in total. The teacher is going to divide them into eight groups for discussion. How many people are left in each group?
16, a piece of 4-meter-long cloth can be cut into five vests of the same size. How much cloth does it take to make a vest?
17. A baby elephant weighs 4 tons. How many elephants can a large truck with a load 10 ton transport at a time?
18, 632 bags of dry bottles in Hongqi chain store, 385 bags were sold and 200 bags were shipped. How many bags of dry bottles are there in the shop at this time?
19, the school bought 8 10 exercise books, and took them from the first grade 168, and from the second grade 165. How many books are left?
20. The car 10 of a certain train originally had 1 16 people. After arriving at a station, 58 people got off and 45 people got on. How many people were there in this car when we drove again?
2 1, 238 yuan for a VCD and 458 yuan for a scanner. Dad brought 800 yuan. Is it enough?
22. Uncle Zhang caught 700 Jin of fish, sold 523 Jin in the morning, and sold 394 Jin less in the afternoon than in the morning.
(1) How many Jin did you sell this afternoon? (2) How many kilograms did a * * * sell on this day? (3) How many kilograms are left?
23. Xiaoming and his sister go to the bookstore together. My sister bought an English dictionary in 87 yuan, and Xiaoming bought a science book in 24 yuan. My sister paid the cashier 150 yuan. How much should I get back?
24. Make a picture frame for a picture 30 cm long and 26 cm wide. What is the circumference of the photo frame at least?
25. Make a big rectangle with two rectangles 4 cm long and 3 cm wide. What is the circumference of a big rectangle?
26. The playground of Xiangyang Primary School is rectangular, with a length of100m and a width of 65m. Xiao Qiang ran around the playground twice. How many meters did Xiao Qiang run?
27. There are 3 students1person and 2 teachers. Each ship is limited to four people. How many boats should I rent at least?
28. A pair of China chess 16 yuan, a pair of checkers 12 yuan, and a pair of Go is three times the sum of a pair of China chess and a pair of checkers. Xiao Ming takes 80 yuan, is it enough to buy a pair of Go?
The students proposed to donate 400 books to the Hand in Hand school. 58 books were donated from grade one to grade six. How many books do I have to donate to reach 400?
30. Plant trees in spring. Plant 12 in the fifth grade and 16 in the sixth grade. The number of trees planted in the whole school is three times that of the fifth and sixth grades. How many trees have been planted in the whole school?
3 1, there are 30 students, 15 came. There are five students in a row. How many rows can they line up?
32. Make a square with a 36 cm iron wire. How long are the sides of this square?
33. If a rope is 25 meters long, cut off 10 meter first, and make a short jump rope every two meters for the rest. How many short jump ropes can you make? How many meters are left?
34. Cut a rectangular piece of paper with a length of 36 cm and a width of 18 cm into two squares. What is the circumference of a square?
35. A rope is five times that of 45 meters, and a wire is seven times that of this rope. How long is this wire?
36. To build a 945-meter road, 354 meters were built in the first month, 276 meters in the second month, and how many meters will it take in the third month?
37. The supermarket sold 153kg of rice in the morning, and there were 56 more bags in the afternoon than in the morning. How many bags of rice did the worker sell today?
The fruit shop returned 54 baskets of fruit, 48 of which were apples and the rest were pears. How many times are there apples and pears in these baskets?
39. A car travels 55 kilometers per hour. According to this calculation, how many kilometers can you drive in 4 hours?
40. The feeding group raised 32 white rabbits and 26 black rabbits. The number of grey rabbits is less than the total number of white rabbits 18. How many gray rabbits will you raise?
4 1, the road repair team has built a road, which has been repaired for 550 meters, and the rest is four times that of the repair. How many meters are left? How long is this road?
42. Mingming has 42 petrol tickets, Fangfang has more than Mingming 14. How many stamps do they have?
There are 24 Metasequoia glyptostroboides in the campus, and the number of pine trees is three times that of Metasequoia glyptostroboides. How many Metasequoias and pine trees are there? How many Metasequoia trees are fewer than pine trees?
There are 35 black swans, and the number of white swans is three times that of black swans, with eight more. How many white swans are there?
45. Aunt Wang went to buy three footballs, each 28 yuan, and paid the salesperson 100 yuan. How much did she get back?
46. The rectangular playground is 55 meters long and 35 meters wide. Xiaohua ran two full laps along the playground. How many meters did he run?
47. Class Three (1) borrowed 29 books, Class Three (2) borrowed 38 books and Class Three (3) borrowed 34 books, less than the sum of Class One and Class Two. How many books did Class Three (3) borrow?
48. The fruit shop sent 850 Jin of apples, and sold 286 Jin in the morning and 354 Jin in the afternoon. How many kilograms are left?
49. A rope is 25 meters long. Cut 10 meter first, and make a short skipping rope every two meters for the rest. How many short jump ropes can you make? How many meters are left?
50. Xiaohong, Xiaoying, Xiaolan and Xiaoping have a table tennis match. Every two people play once, how many times will a * * * play? Please write them down.