Xiao Ming has to memorize 90 words. He memorized 12 words every day for five days. How many words are left?
3. The pencil factory planned to produce 1687 boxes of pencils in 7 days, but actually produced 29 boxes more than planned every day. How many boxes of pencils are actually produced every day?
4. Zhanghang Village needs to install artificial sprinkler pipes, which have been installed for 7 days, with 400 meters installed every day and 660 meters left. How long is this sprinkler?
The construction team built 80 meters of road on the first day, doubled it on the second day and tripled it on the third day. How many meters of roads were built on the third day?
6. Xiaoying is 10 years old this year, and grandpa is seven times younger than Xiaoying and two years old. How old is grandpa this year?
7. African elephants run 400 meters per minute, and horses run four times less distance per minute than African elephants 120 meters. How many meters does this horse run per minute? How many meters does the horse run more than the African elephant per minute?
8. On the first day, the school library lent 158 books, 130 books in the morning and 85 books in the afternoon. How many more books were lent out the next day than the first day?
9. There are 1200 TV sets in the warehouse of department stores. 236 TV sets were sold in the first half of April, and 402 TV sets were sold in the second half of April. How many TV sets are left?
10. The school has carried out interest activities. Eight people participated in the art group, and the number of people who participated in the calligraphy group was twice that of the art group. How many people are there in the art group and the calligraphy group?
1 1. Young pioneers took to the streets to publicize and protect the environment. Forty-two people are in the third grade, and the number of people in the fourth grade is three times that of the third grade. How many more people are in the fourth grade than in the third grade?
12. Children participate in saving, and the first grade saves 100 yuan. The second grade is more in 40 yuan than the first grade. How much is the deposit for two grades?
13. My brother saved 200 yuan, but my brother lost 40 yuan. They want to spend 390 yuan together to buy an English typewriter. Is this enough?
14. Master and apprentice completed 400 parts at the same time. The apprentice earned 2 10, and the master earned 25 more than the apprentice. Have they finished the production task? Later, the apprentice worked overtime and produced 20 more. How much more are they producing than the production task now?
15.6 pencil 18 yuan. Miss Wang wants to buy eight pencils. How much should she pay?
16. 1 cake 2 yuan money, there are 4 pieces in a box, how much is 23 boxes of cakes?
17.7 boxes of mineral water, each containing 24 bottles. The average score of six classes is how many bottles can each class take?
18. There are 4 cones per 2 yuan in the supermarket freezer. Xiao Pang sells them to 40 yuan. How many boxes of such cones can a * * * buy?
19. A pair of Nike jeans is 158 yuan, and a pair of apple jeans is more than this 16 yuan. How much does it cost to buy three pairs of apple jeans?
Li Ping and Gao Shan are both members of the football team. Li Ping runs 1 1 km every day, and the mountain runs 3 kilometers less than Li Ping every day. How many kilometers does the mountain run in a week, calculated by seven days a week?
2 1. Zhang Ming makes 27 paper flowers every day, and Wang Dong makes three times as many paper flowers as Zhang Ming. How many paper flowers can Wang Dong make in four days?
22. A video of children's English is sold in 62 yuan, and a CD is half price. How much does it cost to buy three CDs?
23. In a department store, a toy is sold to 48 yuan, which is more expensive than Guomao 12 yuan. How much does it cost to buy this toy 10 in Guomao?
24. Wang Li deposits in 420 yuan every month, and in 50 yuan every month when she is not in Zhang Jun. How much money will Zhang Jun save after half a year?
25. A box of Kym chocolates is sold to 42 yuan, which is twice the price of a box of Want Want chocolates. How much does it cost to buy 7 boxes of Want Want chocolate?
26. In the bakery, the number of cakes sold every day is half that of bread. If you sell 134 cakes a day, how many cakes will you sell in five days?
27. A road is 1 00m long, and every10m is planted1plane tree from beginning to end. How many trees have been planted?
28. It takes 10 seconds for ants to climb branches. How many minutes does it take to climb from the first section to the 13 section?
29. Plant chrysanthemums around the garden and plant them every 1 meter 1 potted flower. * * * The flower bed is 20 meters long. How many pots of chrysanthemums do you need?
30. Half of Miss Wang's monthly income is kept in 20 yuan for living expenses, and the rest is kept in 50 yuan. At this time, there are 40 yuan left to pay tuition and books for his children. How much does he earn this month?
3 1. After a person walked half the length along the big elevator, he walked the remaining half, leaving 1 km. Q: What is the total length of the big lift?
32. Party A is processing a batch of parts. On the first day, it handled half of the pile of parts and 65,438+00 pieces. On the second day, it handled the remaining half and 65,438+00 pieces, leaving 25 pieces untreated. Q: How many parts are there in this batch?
33. A caterpillar grows from a larva to an adult, doubling every day, and 16 days can grow to 16 cm. How many days can it grow to 4 cm?
34. Pour out half a bucket of water for the first time, then pour 30 kilograms back into the bucket, pour out the remaining half of the water in the bucket for the second time, and pour out 180 kilograms for the third time, leaving 80 kilograms in the bucket. How many kilograms of water are there in the bucket?
35. There are 200 books on the shelves A and B, and the number of books on the shelf A is 3 times less than that on the shelf B 16. How many books are there on shelves A and B?
36. Xiaoyan Hua 185 yuan bought a suit. How much is this shirt and trousers?
37. The sum of the ages of A, B and C is 94 years old. A is twice as old as C, five years old, and B is twice as old as C 19 years old. Q: How old are A, B and C?
38. Xiaoming and Xiaohua finish fishing. Xiao Ming said, "If you give me 1 fish you caught, my fish is twice as big as yours. If I give you 1, our numbers will be the same. " Please work out how many fish each person caught.
39. Xiao Fang went to the stationery store and bought 13 Chinese books and 8 arithmetic books, which cost 10 yuan. As we all know, the price of six Chinese books is equivalent to the price of four arithmetic books. Q: How much are 1 Chinese books and 1 arithmetic books?
40. Find the pattern and fill in the appropriate numbers in brackets. 1, 4, 5, 4, 9, 4, (), ().
4 1. Find the pattern and fill in the appropriate numbers in brackets. 0, 1, 3, 8, 2 1, 55, (), ().
42. The weight of an elephant equals the weight of four cows, the weight of one cow equals the weight of three ponies, and the weight of one pony equals the weight of three piglets. Q: How many piglets does an elephant weigh?
43. There are three people, A, B and C. One likes watching football, the other likes watching boxing and the other likes watching basketball. It is known that A doesn't like watching basketball, and C doesn't like watching basketball and football. One ticket for football, boxing and basketball. Please give them tickets according to their hobbies.
44. There is a pile of iron and copper, each with exactly the same weight and each with exactly the same weight. Three iron bars and five copper bars weigh 2 10g. Four iron blocks and 10 copper blocks weigh 380 grams. Q: How much does each piece of iron and copper weigh?
45. Cut a rectangular cardboard with a length of 8 centimetres and a width of 3 centimetres from each of the four corners. What is the circumference of the rest?
46. Two buckets can hold 50 kilograms of water. If you pour the water in the first bucket into the second bucket, there is as much water in the two buckets. How many kilograms of water was originally contained in the first bucket? How many kilograms of water was originally filled in the second bucket?
47. The two brothers rode into the city for 5 1 km. The speed of a horse is 12 km, but there is only one? Ride alone. My brother walks 5 kilometers per hour, and my brother walks 4 kilometers per hour. They take turns cycling and walking. After a certain distance, the rider dismounted and tied the horse (the time of dismounting and tying the horse can be ignored), and then walked alone. When pedestrians arrive here, they mount their horses and go forward. If they leave at six in the morning, when will they arrive in the city at the same time?
48.6 years ago, the mother was five times as old as her son. Six years later, the age of mother and son is 78. Q: How old is my mother this year?
49 .. Three machine tools can process 1440 parts in 6 hours. According to this calculation, if you add four lathes, how many hours can you process 2800 parts?
50. A kind of water grass is placed on the water surface, and the coverage area doubles every day, covering the whole water surface in just 7 days. How many days did it take for the grass to cover half the water?
5 1. How many different four-digit numbers can be discharged by using the four natural numbers 2, 3, 4 and 5? What is the biggest of these four figures? What is the smallest?
52. How many different four-digit numbers can be discharged by using the four natural numbers 2, 3, 4 and 5? What is the biggest of these four figures? What is the smallest?
53. Calculation:18+19+20+21+22+23 =
54. 100+ 102+ 104+ 106+ 108+ 1 10+ 1 12+ 1 14
55..( 1999+ 1997+ 1995+…+ 13+ 1 1)-( 12+ 14+ 16+…+ 1996+ 1998)
56. Find the pattern and fill in the appropriate numbers in brackets. 76, 2, 75, 3, 74, 4, (), ().
57. Find the pattern and fill in the appropriate numbers in brackets. 1, 6, 7, 12, 13, 18, 19, (), ().
58. Find a pattern and fill in the appropriate numbers in brackets. 0, 1,3,8,2 1,55, (), ().
Alas, I'm exhausted. . . I wish you success in your studies. Come on!