1, a canal is ***6400 meters, and it will be repaired 1200 meters per month on average in the first three months, and the rest will be completed in two months. How many meters will it be completed at least per month on average? Miss Wang and Miss Li bought the same book. Mr. Wang spent 256 yuan on eight books, while Mr. Li spent 192 yuan. How many more books did Mr Wang buy than Mr Li? This farm tool factory originally planned to produce 400 farm tools every month. After technical innovation, the output in nine months exceeded the annual plan of 780 vehicles. How many pieces are produced on average every month now? There are 50 baskets of apples, 2 baskets less than the number of pears. How many baskets of apples and pears are there? 5. A batch of cloth originally planned to make 1 0,800 sets of clothes. Because each set of cloth saved 0.2 m, 1 0,000 sets were made. How many meters does each piece of cloth use now? 6. Two workers, Party A and Party B, processed a batch of parts together and completed the task in 20 days. It is known that A makes three more pieces than B every day, and B takes five days off, so the number of parts completed by B is exactly half that of A. What is the total number of these parts? 7. A machine factory plans to complete 10800 machine tools in 30 days. Due to the improvement of technology, 65,438+080 more machines are manufactured every day than originally planned, so that the task can be completed a few days ahead of schedule. 8. There are two bags of rice, A and B. The weight of rice in bag A is 1.2 times that of bag B. If 5 kilograms is added to bag B, the two bags of rice will be the same. How many kilograms are there in two bags of rice 9. A barrel of oil weighs 45 kilograms. After pouring out half of it, there are 23 kilograms left in the barrel. If this oil is sold to 4.5 yuan per kilogram, how much can a barrel of oil sell? 10, wheat 60 kg per bag, rice 90 kg per bag. Today, * * * transports 280 bags of wheat and rice, only knowing that the total weight of wheat is 1800 kg. How many bags of wheat and rice do you want? 1 1. The chemical fertilizer plant plans to produce 7,200 tons of chemical fertilizer, which has been produced for four months, with an average monthly fertilizer 1200 tons, with 800 tons remaining each month. How many months will it take to complete the production? 12. The plastic factory plans to produce 1300 plastic modules and 780 plastic modules in 6 days. According to this calculation, how many days will it take to produce the rest? 13. Li Shifu produced 252 parts in four hours in the morning, and worked at this speed for three hours in the afternoon. How many parts does Li Shifu produce on this day? 14. The cement plant plans to produce 3,600 tons of cement, which will be completed within 20 days. In fact, it produces 20 tons more than planned every day. How many days does it actually take to complete the task? 15. A pile of 3.6 tons of coal is planned to burn 10 day. After improving the stove, it saves 0.06 tons per day compared with the original plan. How many days can this pile of coal burn now? 16.A and B are 420 kilometers apart, and A to B plan to take a bus for 7 hours. In fact, its speed is more than planned 10 km. How many hours will it actually arrive? 1 7. Xiao Qiang goes back to school from home. If he walks 50 meters per minute, 12 minutes to go back to school, if he walks 10 meters per minute, can he go back to school a few minutes earlier? 18. To build a 6.4km long expressway, the average monthly construction cost in the first three months is1.2km, and the rest is1.4km.. How many months will it take to complete? 19. Xiaoming spent 10.2 yuan on stationery, bought six pencils at 0.45 yuan each, and bought ballpoint pens for the rest. How many can he buy for each 2.5 yuan? 20. The garment factory originally planned to make 120 suits, each with 4.8m cloth. After improving the cutting method. Each set saves 0.3 meters of cloth. How many sets of clothes can be made from the original cloth now? 2 1. A story book with 576 words per page and 25 pages. The second edition, with smaller words, only needs 18 pages. How many words are arranged on each page now than before? A bus and a truck leave from A and B at the same time. The bus travels 80 kilometers per hour and the truck travels 60 kilometers per hour. Five hours later, two cars met. How many kilometers is the railway between A and B? 23. Two construction teams opened 1500m tunnel simultaneously. Construction group A starts from one end and digs 14m every day. Construction team B starts from the other end and digs 16m every day. How many days can the tunnel be dug? 24. Both Party A and Party B type a 7000-word manuscript at the same time. Party A types 600 words per hour, and Party B types 200 words more than Party A. How many hours does it take to complete the task? 25. After school, Xiao Ming and Xiao Qiang walk in opposite directions at the school gate. Xiaoming walks 70 meters per minute, and Xiao Qiang walks 68 meters per minute. How many meters are they apart after 5 minutes? 26. The distance between A and B is 630 kilometers. Two hours after the bus departs from A, the truck departs from B. It is known that the speed of the bus is 65 kilometers per hour and the speed of the truck is 60 kilometers per hour. A few hours after the van left, it met the bus. 27. The machine tool factory used to know that each machine tool used steel 1.02 tons. After improving the design, each machine tool saves 0.65,438+0.2 tons. The steel originally used to make 300 machines can be produced now. 28. Xiaoming bought six pencils and four exercise books at 0.68 yuan each and 0.24 yuan each. Xiao Ming paid 5 yuan money, how much should he get back? 29. Two trains, A and B, leave from two places at the same time. The speed of train A is 80 kilometers per hour, and that of train B is 70 kilometers per hour. 12 hours later, the distance between the two trains is still 1 10 km. How many kilometers are there between these two places? 4. Guangming Paper Mill produced a batch of newsprint, which was originally planned to be completed in 28 days, with a daily output of 12.5 tons. The application was completed three days in advance. How many tons is the actual daily output more than originally planned? 30. Li Shifu has produced a batch of spare parts. Three days ago, 126 parts were produced. According to this calculation, it takes 12 days to complete the production task. How many parts are there in this batch? 3 1. The chemical fertilizer plant planned to produce 84 tons of chemical fertilizer within 30 days, but actually produced 0.2 tons more than planned every day. How many days did it actually finish the task ahead of schedule? 32. Processing a batch of clothes, 300 sets a day, can be completed in 16 days. (1) If processing 400 sets a day, how many days in advance? (2) If 20 sets are processed every day, how many days can it be completed? (3) If it is to be completed five days in advance, how many sets will be processed every day? 33. A car factory planned to produce16,800 cars throughout the year, and as a result, the annual production task was completed two months ahead of schedule. At this rate, how many cars can be produced throughout the year? 34. A workshop of Xinfeng Agricultural Machinery Factory processes 2,480 parts. Originally, 100 pieces were processed every day, and after working for 20 days, 120 pieces were processed every day. So we can finish the task in a few days. 35. A garment factory used to make a children's garment, and every time it was covered with a cloth of 2.2 meters. Now the cutting method has been improved, and each set saves 0.2 meters of cloth. The cloth used to make 600 sets of this kind of clothes, how many sets can be made now? 36. Xiaohong bought three exercise books and three new word books, one for 0.36 yuan and the other for 0.32 yuan. How much did Xiaohong spend less on new word books than on exercise books? 37. Students carry water to water trees. Forty-five trees were watered in the third grade, 10 fewer trees were watered in the third grade than in the fourth grade, and half fewer trees were watered in the fourth grade than in the fifth grade. How many more trees are watered in the fifth grade than in the third grade? 38. Two engineering teams jointly opened a tunnel, each digging from one end. The first team drives 12.6 meters every day, and the second team drives 14.4 meters every day. The first team dug for five days, then the second team joined, and the 2 1 day tunnel was finally opened. How long is this tunnel? (2) How many meters did the two teams dig when they got through? 39\ The car travels 63 kilometers per hour, and the speed of the car is 1.4 times that of the truck. They started from two places 270 kilometers apart at the same time and drove in opposite directions. (1) How many hours did you meet? (2) How many kilometers did the two cars travel when they met? (3) If it is 8: 00, 15, when will we meet? 40. The fruit shop owner bought 1039 kg of bananas and apples, among which bananas were more than apples 13 kg. How many kilograms are bananas? ? Grade 5 1 class boys 4 1 is 1.25 times that of girls. The average height of boys is1.62m, and that of girls is1.53m.. What is the average height of this class? 42. The distance between the two cities is 87.5 kilometers, and Xiaodong walks from east to west at an hourly rate of 6.5 kilometers. Xiaoxi walks from west to east, walking 6 kilometers per hour. Xiaohui rides from east to west, walking 14.5 kilometers per hour. The three of them started at the same time. On the way, Xiaohui met a stream and turned east. When he met Xiaodong, he turned back and headed west. When I met the stream again, I turned back and walked east, and so on until the three met on the road. How many kilometers did Xiaohui walk? 43. The original deposits of both parties are the same. Later, A took out 250 yuan and B deposited it in 350 yuan. At this time, B's deposit is exactly four times that of A. How much did everyone save? ? 44. My mother bought the same three coats and four pairs of trousers with 220 yuan. It is known that three coats are more expensive than three pants, 45 yuan. How much is a coat and a pair of trousers? ? 45. Jaco walks to school every morning. If he walks 65 meters per minute, he will be four minutes late. If he walks 75 meters per minute, he can be two minutes early. What is the distance from Zhang Bo's home to the school? ? 46. A rectangular ground is 90 meters long and 15 meters wide. Trees should be planted around it and in its four corners. The distance between every two trees is equal. How many trees should be planted at least? 47. There are two kinds of animals in the cage, chickens and rabbits. They have 70 heads and 200 feet. There are as many chickens as rabbits in the cage. ? 48. An adult can eat four loaves of bread and four children can only eat one loaf of bread. At present, there are 100 adults and children, but only 100 loaves of bread are eaten at one meal. How many adults and children are there? 49. In a math contest *** 15, it is stipulated that every time you do a right question, you will get 8 points, and if you do a wrong question, you will get 4 points. Keji did all the questions, and he only got 72 points in the exam. How many questions did he answer correctly? ? Xiaoling, a middle school student, took part in the whole school's math competition. Someone asked her how many points she got in the exam. Where did you win? She said: "The product of my ranking and my age and my score is 29 10." What is Xiaoling's ranking, age and score? ?