There is no answer to the math application problem in the fifth grade of primary school.

1. The closing price of a stock in 20 yuan on Monday rose 1 10 on Tuesday and fell 1 10 on Wednesday. Q: What was the closing price on Wednesday?

2. A car travels 72 kilometers per hour, and a small party travels 4 kilometers less by bike than by car. How many kilometers does Xiao Fang ride a bike every hour?

3. Last year, 135 people participated in the activities of the science and technology group. There are more participants this year than last year. How many people participated this year?

4. Build an 8-kilometer expressway, which has been built for 5 kilometers. How many kilometers does it take to build it?

Decorators should install colored lights at the top of the external wall and around the four corners of a rectangular building (the four sides of the ground are not installed). It is understood that the outer wall of the building is 90 meters long, 55 meters wide and 20 meters high. How long will it take the decorator at least?

Before Children's Day, representatives of primary school students in the city erected an Olympic wishing wall 6 meters long, 2.7 meters high and 6 centimeters thick in the center of the square. How many bricks are used in this wall?

The school should paint the new classroom. It is known that the classroom is 8m long, 6m wide and 3m high, and the area excluding doors and windows is 1 1.4m2 ... If painting costs 4 yuan per square meter, how much will it cost to paint this classroom?

8. The bottom of the goldfish bowl is 8 cm long and contains 6 cm deep water. After putting a coral stone in it, the water surface rose to 7 cm. What is the volume of this coral stone?

A rectangular glass container is 2dm in length, width and height from the inside out. Pour 5.5L of water into the container, and then put an apple into the water. At this time, the measured water depth in the container is 15cm. How big is this apple?

10 a rectangular piece of iron (as shown on the right), from four corners.

Cut a square with a side length of 3cm, and then do it.

Put it in a box. How much iron is used in this box?

What is its volume?

1 1. A cuboid glass tank is 8dm long, 6dm wide, 4dm high and 2.8dm deep. If a cube iron block with a length of 4dm is put in, how much water will overflow in the tank?

12 Xiaohong and her father are both 34 years old now. Three years later, her father was 24 years older than Xiaoming. How old are Xiaohong and her father this year?

13. A garment factory produced 4,500 sets of sportswear in February, which was less than 5,438+10% in June. How many sets of sportswear were produced in June+10, 5438?

14 On Teacher's Day this year, the number of outstanding teachers commended by Jianghai Education Bureau increased by 50 compared with last year. How many outstanding teachers did the Education Bureau commend last year?

15 Thirty-five sixth-grade students in Yonghong Primary School participated in extracurricular activities in the biology group, and the number of people who participated in the microcomputer group came from the biology group and the art group. How many people are there in the art group?

16 Nanshan town planned to afforest 200 hectares this year, and as a result, it afforested 124 hectares in the first half of the year and 100 hectares in the second half. What percentage of the plan has been completed? How much more than planned?

23. The original price of a computer is 8000 yuan, and the current price is 6000 yuan. How much is the price reduction?

17 a highway was completed in the first month, 6 kilometers in the second month, and 37.5% was not repaired. What is the total length of this highway?

18 A car traveled 72 kilometers from city a to city b, with the remaining 62.5% of the whole journey. How many kilometers does this bus need to travel to B city?

19 Qingfeng Store delivers 1620 Jin of oranges and pears, and the pears delivered are 80% of oranges. How many kilograms of oranges and pears were delivered?

20. To build a road, it was 17 of the total length on the first day, 32 times of the total length on the second day, 43 times of the total length on the third day, and a fraction of the total length on the third day?

2 1 The transportation team transported a batch of flour, including all the flour for the first time, all the flour for the second time and 45 tons for the second time. How many tons is this batch of flour?

22 (1) The original price of Andersen's fairy tales is 24 yuan, and the current price is cheaper than the original price, 4 yuan. How much is the current price lower than the original price?

(2) The original price of Andersen's Fairy Tales, 24 yuan, is lower than the original price. How much cheaper is the current price than the original price?

(3) The price of Andersen's fairy tales is lower than the original price, and the original price is higher than now. 4 yuan, what's the original price?

An engineering team built an expressway, and the whole line was connected in the first month, and the whole line was connected in the second month, which was more than the first month 12 km. What is the total length of this highway?

24. Two cars, A and B, leave from two places at the same time. Car A travels 56 kilometers per hour and car B travels 48 kilometers per hour. The two cars met at a distance of 32 kilometers from the midpoint. What is the distance between the two places?

32. It takes 12 hours for Party A and Party B to process a batch of parts, and 20 hours for Party B alone. When Party A and Party B jointly complete the task, Party B will give Party A 87 copies, and the two copies are equal. How many parts are there in this batch?

25 A and B start from A and B at the same time. After 7 hours of meeting, A is 6 kilometers faster than B every hour, and the speed ratio of the two cars is 5:6. How many kilometers is it between A and B?

26. Two teams can complete a project in 12 days. If team A is required to do it for six days and team B for eight days, only all the work can be completed. How many days can this project B be completed by one person?

27. A cylindrical water pipe, with an outer diameter of 32 cm and a wall thickness of 1 cm, has a water flow rate of 4.5 meters per second. How many kilograms of water can this water pipe flow out every second? (1 cubic centimeter of water weight 1 gram)

A rectangular iron block is placed in a cylindrical container. Now turn on the tap and pour the water into the container. In 3 minutes, the water just passed the top of the cuboid. In another 18 minutes, the water has filled the container. It is known that the height of a container is 50 cm and the height of a cuboid is 20 cm. Find the ratio of the bottom area of a cuboid to the bottom area of a container.

There are four containers today, weighing 3 tons and 2 tons respectively. Five 5-ton containers with a weight of 1. 5-ton container 14, 7 weight 1 ton container. How many cars do you need at least? The load capacity is 4. Can a 5-ton car transport all the containers at once?

30 Two cylindrical containers, A and B, have a bottom area ratio of 5: 3, a water depth of 20 cm and a water depth of 10 cm. Inject equal amount of water into the two containers to make the water depth in the two containers equal. How many centimeters is the water depth at this time?

3 1.a and B are 207 kilometers apart. A and B leave from A to B at 8: 00 at the same time, with speeds of 60 km/h and 54 km/h respectively. C 8:30 departs from B to A at a speed of 48 km/h, when is the distance between C car and A car and B car equal?

33. The circumference of a rectangle is 130 cm. If its width increases by 1/5 and its length decreases by 1/8, a new rectangle with the same circumference will be obtained. Find the area of the original rectangle.

34. There are three classes in the fifth grade of a primary school. Class 1 and Class 2 are equal in number, and Class 3 accounts for the whole grade.

35. There are 65,438+00 eggs in the basket. At this time, there are more eggs left in the basket than taken away 10. Q: How many eggs are there in the basket?

36. On the way from Port A to Port B, a passenger ship disembarked and 45 people boarded. At this time, the number of passengers carried is equivalent to that when leaving Port A. Q: How many passengers are there at this time?

37. A batch of pencils were given to A, B and C respectively. The number of pencils given to A and B was twice that given to A and B. At this time, there were still 1 1 pencils left. Q: How many pencils did A get?

There are many balls in the bag, among which the red ball is occupied. Later, six red balls were put into the bag.

39. Four little monkeys eat peaches, and the first little monkey eats the second least peach among the other three?

40. A factory has three workshops. The number of people in the first workshop is the sum of the number of people in the second workshop and the number of people in the first and third workshops, and the number of people in the third workshop is 105. Find out the total number of workers in the factory.

4 1, the school held a math lecture. Every two people in the audience have a sixth-grade student, every four people have a fifth-grade student, every six people have a fourth-grade student and five people are teachers. Q: * * * How many listeners are there?

42. There were 108 students exercising on the playground, among whom girls were students, and several students came later.

43. The number of people participating in the choir in Class Two, Grade Five accounts for the whole class, followed by 1 person: How many people are there in Class Two, Grade Five?

44, a textile factory female workers accounted for 30% of the total number of employees, and then transferred 30 female workers. At this time, the number of female workers is twice that of male workers. Q: How many workers are there in the factory now?

45. There are 324 students in Grade 5 and 6 in a primary school, and boys in Grade 5 account for Grade 6.

A road has been built for 800 meters, and the rest is not enough. How many meters are left?

46. A rabbit factory raises 100 white rabbits, black rabbits belong to white rabbits, and gray rabbits account for black rabbits. How many gray rabbits are there?

47. A construction site has 640 tons of cement. How many tons of cement was used for the first time, and the rest was used twice for the second time?

48. There are two ropes. The first one is the second one. If the second rope is cut off by 2 meters, then the length of the two ropes is the same. How many meters are the original two?

49. This shop has shipped tons of apples, which is twice less than oranges. How many tons of oranges were shipped?

50. There were 52 workers in one workshop, and then four women workers were transferred. At this time, the number of female workers is the number of male workers. How many women workers are there?