Two ships, A and B, set out from AB at the same time, met for the first time at the distance of A 700, continued to sail and returned to the other side. On the way back, they met for the second time at a distance of b 400. What is the distance between AB and A?
1. The circumference of a rectangle is equal to the circumference of a square with a side length of 9 cm. The length of rectangle is more than that of panic 14 cm. What is the length and panic level of this rectangle?
2, two boxes of glass balls, box A is less than box B 19, Xiaoming takes five balls from box B and gives them to three little flowers, and puts the rest into box A. At this time, the number of box B is twice that of box A. How many glass balls are there in box A and box B?
Third grade math problem-math problem * number+number = 2555 number =? Learn =? Mystery =?
Teacher Wang took 8000 yuan, spent 6387 yuan on a computer and 986 yuan on a printer. How much is left?
2. Students in Grade Three and Grade Four collected 65 kilograms of tree species, while students in Grade Three collected 6 bags of 5 kilograms each. How many Jin did psychology in the fourth grade receive?
3. The TV factory produced 274 TV sets in the morning and 196 TV sets in the afternoon. If 5 10 TV sets were produced on the third day, how many TV sets were produced on the first day compared with the second day?
Last month, the furniture factory produced 65,438+0,500 single beds, 65,438+0,850 double beds and 2,500 iron beds. How much does the iron bed produce less than the wooden bed?
The handkerchief factory originally planned to produce 3280 dozen handkerchiefs in August. After adopting the new production line, 2,960 dozen handkerchiefs were transported away, leaving 875 dozen. How many dozen more than originally planned?
6. Young Pioneers mow the grass. The first team mowed 46 kilograms, the second team mowed 54 kilograms, and the third team mowed 39 kilograms less than the sum of the first team and the second team. How many kilograms did the third team cut?
7. The first chicken farm has 2670 chickens, and the second chicken farm has 980 fewer chickens than the first chicken farm. How many chickens are there in two chicken farms?
8. The canteen burns 300 kg of coal in September, saving 40 kg of coal in1October compared with September. How many kilograms of coal are burned in two months?
9. The Children's Wear Factory planned to produce 2060 sets of children's wear in September, and as a result, it produced 1208 sets in the first half of the year and 1395 sets in the second half of the year. How many sets exceeded the plan?
10. The washing machine factory produced 845 washing machines in the first half of September, 968 in the second half, and 1560 in August. How many more units were produced in September than in August? How many units are produced in two months?
1 1. The Zhang family has 8 bags of chemical fertilizer, each weighing 50 kilograms, and used 3 15 kilograms. How many kilograms are left?
12, 75 gray rabbits were raised in the feeding group, and the number of white rabbits raised was five times that of gray rabbits. How many two kinds of rabbits are there?
13, 75 gray rabbits were raised in the feeding group, which was five times that of white rabbits. How many rabbits are raised in this breeding group?
14. A group of 9 workers were working on plastic covers at the same time, with an average of each person 105. Put 850 in a box, how many are left?
15. The mall has 8 boxes of white sweatshirts, each containing 560 pieces. 2,600 printed T-shirts. How many shirts are there less than the white shirt?
16, a box of oranges weighs 15 kg, and a box of apples weighs twice as much as oranges. How much do 8 boxes of such apples weigh?
17, the supply and marketing cooperatives bought eggs 1300 kg, and the purchased duck eggs were 2500 kg more than eggs. How many kilograms of eggs and duck eggs are purchased?
18. There are 6 students in the calligraphy group, each of whom writes 24 Chinese characters every day. According to this calculation, how many Chinese characters does this calligraphy group write a week?
19, each worker in the toy factory can make 6 toys per hour and 9 worker hours. How many toys can you make?
There are 8 workers in the sewing group, each of whom makes 4 sets of clothes every day. How many sets of clothes can you make in six days?
2 1, a tennis ball weighs about 60 grams, and a junior volleyball is four times as heavy as a tennis ball. What are the weights of nine juvenile volleyball players?
22. A dragonfly can eat 840 mosquitoes in an hour. According to this calculation, how many mosquitoes can four dragonflies eat in two hours at most?
23. The students go to plant trees. Plant 45 trees in each class in grade three. There are three classes in grade four, and the number of trees in each class is twice that in grade three. How many trees were planted in the fourth grade?
24. The students go to plant trees. There are three classes in grade three, each class has 45 trees, and the number of trees planted in grade four is twice that of grade three. How many trees were planted in the fourth grade?
25. A team produces a part. The average daily production in the first five days is 125, and the production in the sixth day is 135. How many such parts can this group produce in a week (five days)?
26. The first team takes part in school work, and each person carries six bricks at a time. How many bricks can nine people move in four times?
27. There are 2,800 poplars in the forest farm, with more willows 1.500 and fewer pines 1.20. How many pine trees are there?
28. The school held an art exhibition. A total of 48 pictures were exhibited in Grade One and Grade Two, and the number of pictures exhibited in Grade Three was twice that of Grade One and Grade Two. How many paintings are on display in three grades?
29. Supply and marketing cooperatives have bought a batch of schoolbags. There are 65 red schoolbags, the number of yellow schoolbags is only twice that of red schoolbags, and the number of flower schoolbags is 30 less than that of yellow schoolbags. How many flower schoolbags are there?
30. The tomatoes and cucumbers shipped from the market weigh 400 kilograms, including four baskets of tomatoes, each weighing 38 kilograms. How many kilograms of cucumber are there?
3 1, road maintenance in xinfeng village, with an average of150m per day. After four days of repair, there are still 80 meters to be repaired. How long is this road?
32. The TV factory assembled 2 15 TV sets on the first day, 108 TV sets in the morning and 136 TV sets in the afternoon. How many more units were assembled the next day than the first day?
There are 64 kilograms of apples and four times as many pears in the fruit shop. Put these pears in eight baskets evenly. How many kilograms are there in each basket?
34. The cinema has 428 seats in 8 rows downstairs and 28 seats in 9 rows upstairs. How many seats are there upstairs than downstairs?
35. The printing factory planned to print 1350 books every day, and actually printed 7,000 books in five days. How many more books are actually printed than planned every day?