2.2 mu of spinach is fertilized 1 kg, 5 mu of cabbage is fertilized by 3 kg, and two kinds of vegetables are fertilized by 9 kg *** 16 mu. How many acres of cabbage are there?
Miss Li bought 45 exercise books and diaries for the school with 69 yuan money. Each exercise book 3 .20 yuan, 0.70 yuan per diary. How many exercise books and diaries did you buy?
4. There are 100 chickens and rabbits, and chickens have 80 more feet than rabbits. How many chickens and rabbits are there?
5. There are 100 steamed buns for 100 monks to eat. One monk eats three steamed buns, and three young monks eat/kloc-0 steamed buns. How many monks are there?
6, a piece of grass, 10 cows can eat the grass in 20 days, 15 cows 10 days can eat the grass. How many cows can eat grass in five days?
7. A ship has a leak and water enters the ship at a constant speed. When the leak was found, some water had already entered. If 12 people wash water, it can be washed in 3 hours; If there are only five people scouring the water, it will take 10 hour to finish scouring. /kloc-how many hours can 0/7 people finish scouring?
8. In a parking lot, 32 cars and motorcycles are parked. Among them, cars have four wheels and motorcycles have three wheels. These cars have 108 wheels. How many cars and motorcycles are there?
There are 26 sets of chess and checkers in the school, just enough for students to carry out activities at the same time. Two people play chess and six people play checkers. How many pairs of chess and checkers are there?
10, Xiaohua bought 34 commemorative stamps from 2 yuan and 5 yuan and used them to go to 98 yuan. How many commemorative stamps of two yuan and five yuan did Qiu Xiaohua buy?
1 1. Forty-six people in the class went boating, and * * took a 12 boat, including 5 people in the big boat and 3 people in the small boat. How many big boats and small boats are there?
12, cranes and turtles in the same pool, cranes are more than turtles 12, cranes and turtles have 72 feet. How many cranes and turtles are there?
13, Xiao just bought eight stamps and four stamps *** 100, * * paid 6.8 yuan, and asked, how many stamps did Xiao just buy back? How much do you pay each other?
14. The cross-country cycling race is 220km long and divided into 20 sections, one of which is 1km and the other is 9km. How many sections are 9 kilometers long?
15 and 12 There are 34 people playing on the table tennis table. Q: How many tables are there for single and double?
16. Teacher Zhang, the head teacher, took 50 students from Class Two, Grade Five to plant trees. Teacher Zhang planted 5 trees, a boy planted 3 trees and a girl planted 2 trees, a total of 120 trees. How many boys and girls did you ask?
17, 4kg for a large oil bottle and 2kg for a small oil bottle, 1kg. At present, 60 bottles of 100kg oil are filled. How many large and small oil bottles are there?
18, Teacher Liu took 4 1 students to go boating in Beihai Park, and * * * rented a boat on 10. Each big boat takes six people and each small boat takes four people. How many boats did you rent?
19. In a parking lot, 32 cars and motorcycles are parked. Among them, cars have four wheels and motorcycles have three wheels. These cars have 108 wheels. How many cars and motorcycles are there?
20. The PE teacher bought ***2 1 sportswear tops and pants, and * * spent 439 yuan, of which the tops and pants were each 19 yuan. How many shirts and trousers did the teacher buy?
2 1. Mother White Rabbit picks mushrooms, 24 mushrooms a day in sunny days and 6 mushrooms a day in rainy days1. It has picked 168 mushrooms for several days, averaging 2 1 mushroom per day. How many mushrooms were picked on a sunny day?
22. Wang Mai Jr. got ***20 movie tickets of A and B. The average ticket price of the two kinds of movie tickets is 26 yuan, while the actual ticket price of A movie ticket is 30 yuan and the actual ticket price of B movie ticket is 20 yuan. How many tickets did you buy for each movie?
23. Xiaoming and Xiao Fang live in the same hospital. Xiao Fang walks 50 meters to school every minute. 12 goes to school. Xiaoming walks more than Xiao Fang at school 10 meter. How many minutes does it take Xiao Ming to get to school?
24. There are 540 students in the fifth grade of the experimental primary school. The number of boys is 0.2 times that of 65438+ girls. How many boys and girls are there?
25. Teacher Chen will buy some stationery from 80 yuan as prizes for the grade sports meeting. He spent 45.6 yuan to buy 8 photo albums first, and is going to use the remaining money to buy some pens, each 2.5 yuan. How many pens can he buy?
26, a grain team, five cars * * * transport 22.5 tons of grain, according to this calculation, to transport 1 18 tons of grain, at least how many cars are needed?
27. The processing workshop has to process 875 parts, which has been processed for 3.5 hours and 50 parts per hour. The rest will be processed at an average speed of 56 pieces per hour. How many hours will it take to finish this task? (Equation solving)
28. Three students had a typing contest. Xiao Ming typed 200 words, 180 words correctly, Xiao Gang typed 120 words, and 90 words correctly. Xiaohua typed 2000 words, and the word 18 is correct. Who do you think has the best grades? Why?
29、
Rhino, antelope and peacock have 26 heads, 80 feet and 20 horns. It is known that rhinoceros has 4 feet 1 horn, antelope has 4 feet and 2 horns, and peacock has 2 feet and no horns. Therefore, rhinos and peacocks have no horns.
30、
Some strange animals gathered on the lawn. There are one-legged animals (1 head 1 foot), two-headed dragons (2 heads and 4 feet), three-legged cats (1 head and 3 feet) and four-legged snakes (1 head and 4 feet). If the animals on the lawn *
3 1、
Learn and think about the sixth grade of primary school, hold a math contest, with 20 questions. If you do a question correctly, you will get 5 points, and if you don't do a question or do a wrong question, you will get 3 points. Liu Gang got 60 points and asked him how many questions he had done correctly.
There are some chickens and rabbits in the cage. From the top, there are 35 heads, and from the bottom, there are 94 feet. How many chickens and rabbits are there?
33, 1, a manuscript, a typing alone takes 6 hours. B It takes 10 hours just to type. Now A has been playing alone for several hours, and B has something to finish, so it will take seven hours. How many hours of typing?
34. This year is 1998. The parents are 78 years old (integer) and the brothers are 17 years old. Four years later (2002), my father was four times as old as my brother, and my mother was three times as old as my brother. So when the father is three times as old as his brother, what year is it?
Spiders have eight legs, dragonflies have six legs and two pairs of wings, and cicadas have six legs and 1 pairs of wings. Now these three kinds of bugs have 18, 1 18 legs and 20 pairs of wings. How many of each?
36. In a math exam, 52 people in the class took part in five questions, and * * * got it right 18 1 question. It is known that everyone answered at least 1 question correctly, 7 people answered 1 question correctly, 6 people answered all 5 questions correctly, and the same number of people answered 2 and 3 questions correctly, so the number of people who answered 4 questions correctly.
37. Turtle crane * * * 100 head with 350 feet. How many turtles and cranes are there?
There are 26 sets of chess and checkers in the school, just enough for students to carry out activities at the same time. There are two sets of chess and six sets of checkers. How many sets of chess and checkers are there?
38. Some pennies and nickels are worth 2.99 yuan, of which the number of nickels is four times that of nickels. How many nickels are there?
39. Someone got 50 RMB * * in 240 yuan, including 2 yuan, 5 yuan and 10 yuan, of which 2 yuan and 5 yuan had as many. So how many pieces are there in 2 yuan, 5 yuan and 10 yuan?
40. A project was completed in 0/2 days by Party A and 0/8 days by Party B. Now Party A has done it for several days, and then Party B finished the rest alone, so it took 16 days before and after. How many days did Party A do it first?
4 1. The whole motorcycle race is 28 1km, which is divided into several stages. At each stage, some of them are composed of uphill roads (3 kilometers), flat roads (4 kilometers), downhill roads (2 kilometers) and flat roads (4 kilometers). Some of them are composed of uphill roads (3 kilometers), downhill roads (2 kilometers) and Pingdi roads (4 kilometers). It is known that after the motorcycle completed the journey, * * * ran 25 uphill roads. How many segments does the whole process of these two stages include?
42. Use 1 Yuan Qian * * 1 5 stamp to buy stamps of 4 cents, 8 cents and1cent. How many stamps can I buy at most?
43. Buy some 4-cent and 8-cent stamps, 6 yuan 80 cents. As we all know, there are 40 8-cent stamps more than 4-cent stamps, so how many stamps did you buy each?
44. If a project is all sunny, it can be completed in 15 days. If it rains, how many days will it take to complete the project on a rainy day?
45. There are 100 chickens and rabbits, and chickens have fewer feet than rabbits. 28. How many chickens and rabbits are there?
46. In ancient poetry, five-character quatrains are four poems, each with five words; Seven-character quatrains are four poems with seven words each. There is a collection of poems, in which there are more five-character quatrains than seven-character quatrains 13, but the total number of words is 20 words less. How many poems are there in each of the two kinds?
47. There is a truck transporting 2,000 glass bottles, and the freight is calculated according to the number of bottles in good condition when they arrive. Twenty cents a bottle. If it is damaged, the damaged bottle will be compensated 1 yuan without paying the freight. As a result, the freight was 379.6 yuan. How many glass bottles were damaged in this handling?
48. There are two natural tests. The first time, there are 24 questions. Correct answer 1, 5 points. Wrong answer 1, score 1. In the second test, if you answer 15 correctly, 8 points will be scored, and if you answer or don't answer 1, 2 points will be deducted. Xiao Ming answered 30 questions correctly in two tests, but the score of the first test was higher than that of the second test 10. How many points did Xiao Ming get in each exam?
49. The transportation company transported 65,438+0,000 thermos bottles. According to the contract, the freight for each thermos bottle is 0.5 yuan. If a thermos bottle is damaged, it will not only be free of freight, but also compensate 3.5 yuan. After the goods arrive, the transportation company will actually pay the freight to 480 yuan. How many thermos bottles will be damaged?
50. Aunt Li, the assembler, assembles an average of 60 meters every day. If there is no genuine product, it can create 15 yuan's wealth for enterprises. However, if one is damaged, 85 yuan will be lost. One day, she created 700 yuan for the enterprise. How many qualified meters did he assemble on this day?