Application problem refers to the problem of applying what you have learned to real life practice. In mathematics, application problems are divided into two categories: one is mathematical application. The other is practical application. Mathematical application refers to a single quantitative relationship, which constitutes a topic and does not involve the existence and relationship of real quantities. The following are the application questions I brought to you in the fourth grade of primary school, hoping to help you!

1, uncle worker made 24 parts in 3 hours. According to this calculation, how many parts did he make in 8 hours?

2. Uncle Wang took 1500 yuan to buy fertilizer, bought 9 bags of fertilizer, and brought them back 15 yuan. How much is each bag of fertilizer?

Uncle Zhang bought 15 piglets for 7455 yuan. He wants to buy another 30 such piglets. How much is he going to prepare?

4, a pair of leather shoes 105 yuan, the price of a dress is twice that of shoes. How much does it cost mom to buy a pair of shoes and a dress?

5. Yucai Primary School should divide 180 Young Pioneers into 6 teams on average, and each team will be divided into 5 groups. How many young pioneers are there in each group on average?

6. Xiaorong raised 45 chickens and 18 ducks. If each chicken can lay 13kg a year and each duck can lay 12kg a year, how many Jin of eggs can these chickens and ducks lay a year?

7. A pencil is 7 points more expensive than an eraser. A ballpoint pen can buy 1 1 pencils. It is known that an eraser is 8 points. How much is a ballpoint pen?

8. Zhang Jun is 45 years old and Xiaogang is 5 years old. How many times will Zhang Jun be bigger than Xiaogang in three years?

9. Xiaoming has money from 40 yuan, more than 6 yuan from Xiao Qiang. How much money do they have? How much did Xiao Ming give Xiao Qiang? They both have the same amount of money.

10. There are 42 male workers in a factory, and the number of female workers is three times less than that of male workers. 1 1. How many workers are there in this factory?

1 1. Uncle Wang opened fertilizer in the fertilizer plant. It took five hours to go at 48 kilometers per hour, and only three hours to come back empty. What was the average speed when I came back? What is the average speed of going back and forth?

12. The school will distribute exercise books to 8 classes, each class has 200 copies, and 100 copies will be reserved for awarding prizes. How many exercise books should schools buy?

13, the school canteen carries coal 1 ton, and it is planned to burn for 40 days. Thanks to the improved stove,

Save 5 kilograms every day. How many days can this batch of coal burn?

14. A binding team has to bind 2640 books, and 240 books have been bound in 3 hours. According to this calculation, how many hours will the remaining books be bound?

In grades 15 and 4, 244 books will be restored for the library. Repair 49 copies on the first day, 5 1 copy on the second day, and finish the rest three days. How many books will you repair on average every day?

16, the site needs 50 tons of yellow sand. It was transported five times by a car with a load of 4 tons, and the rest was transported by a car with a load of 5 tons. How many times will it be shipped?

17. Flowers 120 Buy a pot of flowers, 4 pots for free, and 25 pots for school. What is the lowest cost?

18. An elephant needs to eat 350 kilograms of food a day. The breeder prepared 6 tons of food, enough for the elephant to eat for 20 days?

19, buy a bunch of flowers, 20 yuan, buy four 1. Aunt Li buys 4 bundles at a time. How much cheaper is each bundle?

20. In fruit shops, 2 kilograms of apples are sold in 5 yuan, and 3 kilograms of bananas are sold at 12 yuan. Mother is going to buy 6 kilograms of apples and bananas each. How much should she pay?

2 1. The PE teacher bought 8 boxes of badminton, each box was 12, and the price was ***288 yuan. How much is badminton on average?

22. Li Shifu has produced a batch of spare parts. Originally, it was planned to produce an average of 50 pieces per hour, which was completed in six hours. The task was actually completed in five hours. How many pieces are actually produced per hour?

The shop sent five boxes of fruit, weighing 50 kilograms. If these fruits are packed in small boxes, the weight of each box is half of the original. How many boxes can these fruits hold?

24.84 kg of soybean can squeeze out 12 kg of oil. According to this calculation, how many kilograms of soybeans do you need to squeeze 120 kilograms of oil?

25. There are 36 students in the school sports group, and the number of students in the art group is twice as small as that in the sports group, 12. How many people are there in the school art troupe?

26. In the fourth grade, I wanted to buy five photo albums and five mechanical pencil to reward three outstanding students. I spent 28.75 yuan on the album and 6. 15 yuan on mechanical pencil. How much is an album more expensive than mechanical pencil?

27. Dongguan Primary School sports team has 7 1 person, including basketball players 15. The number of track and field athletes is 2.4 times that of basketball players, and the rest are football players. How many people are there in the football team?

28. The store shipped 16 baskets of apples, each weighing 42.5 kilograms. Pears delivered are less than apples 120kg. How many kilograms of pears?

.

29, students do exercises, every 25 people in a row, 30 rows of boys and 28 rows of girls. How many more boys than girls?

30. Xiao Ming read a story book with 180 pages, and read it for 3 days, with an average of 24 pages a day. The rest read an average of 36 pages a day. How many days will it take to complete?

3 1. Xiaogang has 28 stamps. After giving Xiaohong eight stamps, they have the same number of stamps. How many stamps does Xiaohong have?

32. 15 teacher takes 129 students for an autumn outing. If there are 36 people in each car, how many cars does a car need?

33. A barrel of oil weighs 9 kilograms. Half of the oil was used, and there were 5 kilograms left in the bucket. How much does this barrel of oil weigh? How much does this bucket weigh?

34. In the park, there are 52 pots of flowers on both sides of a road from beginning to end. There are as many flowers on each side, and the distance between two adjacent pots of flowers is 4 meters. How long is this road?

35. The water consumption of Yuanyuan's family in the last four quarters is as follows.

Quarter one two three four

Water consumption (m3)123178196163

How many cubic meters of water did Yuanyuan use on average every month last year?

36. In the fourth grade, 244 books will be restored for the library. Repair 49 copies on the first day, 5 1 copy on the second day, and finish the rest three days. How many books will you repair on average every day?

37. The construction site needs 50 tons of yellow sand. It was transported five times by a car with a load of 4 tons, and the rest was transported by a car with a load of 2.5 tons. How many times will it be shipped?

38. Pine trees and Berlin can secrete fungicides and purify the air. If 1 ha pine forest secretes 54 kilograms of bactericide every day, how many kilograms of bactericide does 24 hectares pine forest secrete 3 1 day?

39. 34 students from Class 3, Grade 4 took a group photo as a souvenir. Pricing 33 yuan, giving away 4 photos. In addition, each piece is printed in 2.3 yuan. Everyone in the class wants one. How much is one? How much is a normal photo?

40. A forest farm used a sprayer to spray chemicals on trees, and two sprayers sprayed 200 trees in four hours. According to this calculation, how many plants can five sprayers spray in six hours?

4 1. Laying hens in mechanized chicken farms lay an average of 288 eggs every year. If calculated according to the weight of each 16 eggs 1 kg, how many kilograms of eggs are laid by each chicken every year?

42. To plant trees around the square pond, six poplars should be planted on each side. How many poplars should be planted on each side at least?

43. A travel agency offers two schemes, A and B, for a one-day trip to the West Lake. Each tour group can only purchase tickets according to one scheme.

Type A: each group with more than 5 people 150 yuan.

Type B: adult 200 yuan, child 100 yuan.

(1) 10 Parents take five children for a one-day trip to the West Lake. Which ticket is cheaper? How much will it cost at least?

(2) What if five parents have 10 children?

44. The sixth grade students of Yuhua Primary School went to the Ocean Museum in four batches. Three cars were rented in each batch. Each car has 35 people. How many people went to the Ocean Museum in the sixth grade?

45. The distance between Party A and Party B is 8800 kilometers. One car travels from Party A to Party B at a speed of 78 kilometers per hour, and the other car travels from Party B to Party A at a speed of 65 kilometers per hour. How many kilometers are the two cars separated from each other after four hours?

46. Two trains, A and B, run opposite each other. Car A travels 78 kilometers per hour. The b train runs at 62 kilometers per hour. 1 After the first car leaves, the second car leaves. After three hours, the two cars meet. How many kilometers is the railway between these two places?

47. Two cars are leaving from one place at the same time in opposite directions. Car A travels at an average speed of 65 kilometers per hour, while car B travels at an average speed of 62 kilometers per hour. After 3 hours, how many kilometers are the two cars apart?

48. A car and a motorcycle set off from two places 378 kilometers apart at the same time and left relatively. This car travels 72 kilometers per hour, which is twice the speed of a motorcycle. How long does it take for two cars to meet?

※ It takes six hours for a car to travel 580 kilometers from A to B.. On the way, some expressways are expressways, and the other part is ordinary highways. It is known that the speed of automobiles on expressways is120km, and that on ordinary highways is 80km. How many kilometers has the car traveled on the expressway?

50. Xiaohua's home is 2300 meters away from school, and he goes to walking to school every day. One day, he walked at a speed of 80 meters per minute. When he looked up, he found that he would be late. He immediately ran at a speed of 150 meters per minute, and it took him 20 minutes to get to school on time. How far does Xiaohua start running from school? ※? ;