Dongdong and Mingming helped the teacher move books. There were 26 books in one day. Dongdong rushed to move some of them first. Mingming was not convinced and took half of them away. Dongdong snatched them back from Mingming. Half, Mingming refused, and Dongdong returned 5 copies to him. At this time, Dongdong moved 2 copies less than Mingming. How many copies did Dongdong plan to move initially?
Both ships A and B departed from AB at the same time. , they met for the first time at a distance of 700 from point A. The two ships continued sailing and returned after reaching the other shore. On the way back, they met for the second time at a distance of 400 from point B. What is the distance between the two places AB?
1. The perimeter of a rectangle is equal to the perimeter of a square with a side length of 9 cm. The length of the rectangle is 14 cm longer than the perimeter. What are the length and length of the rectangle?
2. There are two boxes of glass balls. Box A has 19 fewer balls than box B. Xiao Ming takes out 5 balls from box B, gives 3 to Xiaohua, and puts the rest into box A. At this time, B The number of boxes is twice that of box A. How many glass balls did box A and box B originally have?
Third grade mathematics questions - Mathematical puzzle * number number = 2555 number =? Study=? Mystery=?
Teacher Wang brought 8,000 yuan, spent 6,387 yuan on a computer, and 986 yuan on a printer. How many yuan are left?
2. The third- and fourth-grade students collected 65 kilograms of tree seeds in one day. The third-grade students collected 6 bags of 5 kilograms each. How many kilograms did the fourth-grade psychology student collect?
3. The TV factory produces 274 TV sets in the morning and 196 sets in the afternoon on the first day. If it produces 510 sets on the third day, how many fewer sets will be produced on the first day than on the second day?
4. Last month, the furniture factory produced 1,500 single wooden beds, 1,850 double wooden beds, and 2,500 iron beds. How many fewer iron beds were produced than wooden beds?
5. The handkerchief factory originally planned to produce 3,280 dozen handkerchiefs in August. After adopting the new production line, 2,960 dozen produced handkerchiefs were shipped away, leaving 875 dozen. How much more production than originally planned?
6. The Young Pioneers cut the grass. The first team mows 46 kilograms of grass, the second team mows 54 kilograms of grass, and the third team mows 39 kilograms less grass than the first and second teams. How many kilograms of grass did the third team mow?
7. The first chicken farm raises 2,670 chickens, and the second chicken farm raises 980 chickens less than the first chicken farm. How many chickens do the two chicken farms raise in one ***?
8. The canteen burned 300 kilograms of coal in September, and saved 40 kilograms of coal in October compared with September. How many kilograms of coal are burned in two months?
9. The children's clothing factory planned to produce 2,060 sets of children's clothing in September. However, it produced 1,208 sets in the first half of the month and 1,395 sets in the second half. How many sets exceeded the plan?
10. The washing machine factory produced 845 washing machines in the first half of September, 968 units in the second half, and 1,560 units in August. How many more units are produced in September than in August? How many units will be produced in two months?
11. Uncle Zhang’s family has 8 bags of fertilizer. Each bag weighs 50 kilograms. 315 kilograms have been used. How many kilograms are left?
12. The breeding group raises 75 gray rabbits, and the number of white rabbits raised is five times that of gray rabbits. How many rabbits are there of both kinds?
13. The breeding group raises 75 gray rabbits, which is five times the number of white rabbits. How many rabbits does this breeding group raise?
14. A group of 9 workers processes plastic covers at the same time, with an average of 105 per person. Put 850 of them in boxes, how many are left?
15. There are 8 boxes of white undershirts in the mall, with 560 pieces per box. 2,600 floral undershirts. How many fewer floral undershirts are there than white undershirts?
16. A box of oranges weighs 15 kilograms, and a box of apples weighs twice as much as oranges. How many kilograms do 8 boxes of these apples weigh?
17. The supply and marketing cooperative purchased 1,300 kilograms of eggs, and purchased 2,500 kilograms more duck eggs than eggs.
***How ??many kilograms of eggs and duck eggs were purchased?
18. There are 6 students in the calligraphy group. Each person writes 24 large characters every day. Based on this calculation, how many large characters can this calligraphy group write in a week?
19. Each worker in the toy factory can make 6 toys per hour, and 9 workers work hours. How many toys can be made?
20. There are 8 workers in the sewing team, and each person makes 4 sets of clothes every day. How many sets of clothes can be made in 6 days?
21. A tennis ball weighs about 60 grams, and the weight of a youth volleyball is 4 times the weight of a tennis ball. How many kilograms do 9 youth volleyballs weigh?
22. A dragonfly can eat up to 840 mosquitoes in one hour. Based on this calculation, how many mosquitoes can four dragonflies eat in two hours?
23. The students went to plant trees. Each third grade class planted 45 trees. There are three classes in the fourth grade, and the number of trees planted in each class is twice that of the third grade. How many trees did *** in fourth grade plant?
24. The students went to plant trees. There are three classes in the third grade, and each class plants 45 trees. The number of trees planted in the fourth grade is twice the total number of the third grade. How many trees did the fourth grade plant?
25. A group produces one type of part. The average daily production in the first five days was 125 units, and on the sixth day, 135 units were produced. How many of these parts does this team produce in a week (five days)?
26. The first team participates in school labor. Each person carries 6 bricks each time. How many bricks can 9 people carry 4 times?
27. There are 2,800 poplar trees in the forest farm, 1,500 more willow trees than poplar trees, and 120 fewer pine trees than willow trees. How many pine trees are there?
28. The school held an art exhibition. The first and second grade students exhibited 48 pictures, and the third grade students exhibited twice as many pictures as the total number of first and second grade students. How many paintings will be exhibited by *** from the three grades?
29. The supply and marketing cooperative purchased a batch of schoolbags. There are 65 red schoolbags. There are twice as many yellow schoolbags as red schoolbags. There are 30 less flowery schoolbags than yellow schoolbags. How many flowery schoolbags are there?
30. The tomatoes and cucumbers shipped from the market weighed 400 kilograms, including 4 baskets of tomatoes, each weighing 38 kilograms. How many kilograms of cucumbers?
31. Xinfeng Village is building a road, with an average of 150 meters per day. After 4 days of construction, there are still 80 meters left. How many meters long is this road?
32. The TV factory assembled 215 TV sets on the first day, 108 sets in the morning and 136 sets in the afternoon. How many more units were assembled on the second day than on the first day?
33. There are 64 kilograms of apples and pears in the fruit shop