5/7+7/5+7/2-5/2=

6/8-6/5+2/5=

5/8-6/4-2/7+7/5=

2/8+5/9-3/5=

8/7-3/2+3/4=

9/5-2/ 1+3/5=

6/7-5/2+7/5=

8/5-8/3+6/5=

9/2+5/4+9/8-5/4=

6/7-2/8+3/7=

/37+2/8-9/ 1=

2/ 1+3/2-4/3=

5/7-2/7+3/8=

2/5-3/4-3/2+2/9=

8/7+9/ 1-7/4=

9/5+4/7-8/5=

7/6+3/2-7/3=

5/4+7/ 1-5/4=

7/4+5/3-6/5=

2/5-3/2-5/2=

8/5-5/8-2/8- 1/7+6/8+2/7=

5/7-6/7+2/7=

6/7+3/5-7/ 1=

5/7-2/4+3/7=

6/7+3/5-2/9=

2/5+2/8-3/7=

2/7+3/8-2/8

3/5-3/5+6/5=

5/3-3/5+3/5=

3/5+5/7-3/7=

application problem

1. Xiaoming bought 2 kilograms of pears, * * * 22; Xiaoli bought 3 Jin of pears, ***24, and two people bought one pear on average.

How many kilograms each? Who bought a bigger pear?

1. bright primary school students 1200, including 576 boys. What percentage of the students are boys?

2. A transistor radio, the current price is 165 yuan, which is lower than that of 85 yuan last year by what percentage?

3. There are workers 1280 in a factory, including 620 women workers. What percentage of female workers are less than male workers?

There are 500 students in Guanghua Primary School, and four students are sick today. What's the attendance today?

Due to the reform of production technology, the time for a worker to produce a part is reduced from 12 minutes to 8 minutes. In the past, 40 parts were produced every day, but now the productivity has increased by several percent.

6. The school shipped 34 tons of coal, which has been burned 18 tons. How much is the proportion of burns more than others?

7. 400 seeds were used for germination test, and 32 seeds did not germinate. What is the germination rate of these seeds?

There are 640 female workers in Hongqi Textile Factory, eight fifths of whom are female workers. How many are women workers?

9. A book has 240 pages. On the first day, I read 1/4, and on the second day, I read 3/8 books. How many pages have I read in two days?

10. The construction site needs 120 tons of cement. The total amount delivered on the first day is 1/4, and the second day is 2/5 of the total amount. How many tons is it cloudy than the first day?

1 1. Grass will lose 80% of its original weight after drying. There are 6.2 tons of grass. How many tons can it dry?

12. It takes Party A 8 hours to walk from place A to place B, and Party B has more time to walk14. What is the time for Party B to walk?

13. A wire is 4.8 meters long. Use 1/3 of the total length for the first time, and the remaining 60% for the second time. How many meters are left in the end?

14. There are female workers in a factory 128, and the number of female workers is 40% of that of male workers. How many workers are there in the whole factory?

15, I walked 5/8 of the whole length from A to B and walked 350 meters. What is the total length from a to b?

16. There are two pieces of steel, the first piece is 4 meters long, the first piece is 2/9 of the second piece, and how many meters is the second piece?

17. The amount of a savings bank in the third quarter accounts for14 of the annual savings, and the amount of savings in the fourth quarter accounts for 3/ 10 of the annual savings. The fourth quarter was 628,000 yuan more than the third quarter. What is the annual savings?

18, the tractor can plow a piece of land in 8 days, plow for 5 days, and there are 75 acres of wasteland. How many acres is this land?

19. A wire is cut into three sections, the first section accounts for 1/3 of the total length, the second section accounts for 2/5 of the total length, and the third section is 6.4m long. How long is this wire?

1. A batch of children's books arrived from Xinhua Bookstore. On the first day, 1800 books were sold, and on the second day, 1/9 books were sold more than on the first day. The rest is 3/7 of the total and sold out on the third day. How many children's books do you want?

2. Xiao Ming reads a story book, reading 15 pages every day for 4 days, and then reading15 of the whole book. At this point, there is 1/5 left in the whole book. How many pages does this story book have?

3. One day, the flour mill finished processing 2/5 of a batch of wheat in 2- hours. How long will it take to process the remaining batch of wheat with the same efficiency?

4. A school bought a batch of books and put them in two bookcases, of which the number of books in the first bookcase accounted for 58% of this batch of books. If 32 books are taken from the first bookcase and put into the second bookcase, the books in the two bookcases each account for 1/2 of this batch of books. How many books are there in this batch?

5.6 1 Class Boys account for 5/8 of the class, while girls are less than boys 10. How many boys and girls are there?

6. The coal mine planned to mine 36,000 tons in June (calculated in 30 days), but the planned 1/6 was actually completed in the first four days. According to this calculation, how many days can you finish the task ahead of schedule?

7. Two cars, A and B, leave relatively from two places at the same time. Car A travels 40 kilometers per hour and car B travels 60 kilometers per hour. When the difference between the two cars is still 25%, it has been used for 1- hours. How many kilometers are the two places apart?

8. In order to measure the height of the bridge, fold the rope 4 times to the water surface, leaving 3 meters, cut the rope 6 meters, and fold it 3 times to the water surface, leaving 4 meters. How many meters is the length of the rope and the height of the bridge?

9. From Dongcheng to Xicheng, it takes 3/8 of the whole road, and it is 4 kilometers away from the midpoint of the whole road. How many kilometers are the two cities apart?

10. The construction team expects to complete a project within 30 days. 1. The project of13 was completed in 18 days. How many people will be added if it is completed on time?

Grade 1 1, grade 5 * * *, three classes, 1 class number accounts for the whole grade 10/33. Class 3 has more people than Class 2111. If four students are transferred from Class Three, the number of students in Class Three and Class Two is the same. How many people are there in the fifth grade?

12. A coal mining team has mined 4800 tons of coal, which is 80% of the monthly plan. According to this efficiency, how many tons of coal can be mined over the planned 1/4?

13. A project will be completed by team A in 24 days and team B in 30 days. Party A and Party B did it at the same time for 8 days, and the remaining team C did it, which took another 6 days to complete. How many days will it take Group C to finish this project?

14. A bunch of apples, when all 3/8 of them were harvested, were filled with 3 boxes, which was 24 kilograms more. When the rest were harvested, they were just filled with 6 boxes. How many kilograms is this pile of apples?

The sum of 15.A, B and C is 320. 65438+0/2 of the number A is equal to 5/6 of the number B, and the number C is equal to the sum of the numbers A and B. What are these three numbers?

1. Processing a batch of parts, Master Zhang Can processes 20 pieces per hour, which can be completed in 7 hours. Our work efficiency is 80% of that of Master Zhang. How many hours will it take Li Shifu to complete these tasks?

2. Party A and Party B went to the bookstore to sell books, and * * * brought 54 yuan money. A spent 3/4 of his own money, and B spent 4/5 of his own money, and the rest of their money was exactly the same. How much did A and B originally bring?

Party A and Party B have deposited several yuan in the bank. It is known that 1/4 of Party A's deposit is equal to 1/5 of Party B's deposit, and it is also known that Party B has more deposits in 24 yuan than Party A. How much do you want to deposit with Party A and Party B?

4. A factory needs to import 300 tons of winter coal, all of which is 1/4 on the first day, the remaining 2/5 on the second day and all of which on the third day. How many tons were shipped on the third day?

5. The road team built a road, and 20% of the total length was built on the first day. The ratio of the distance repaired on the first day to the next day is 4: 5, leaving 440 meters to be repaired. How long is this road?

6. The fertilizer factory wants to produce a batch of fertilizer. Originally planned to produce 75 tons per day, it is planned to be completed in 20 days. The actual daily tonnage is more than the planned daily tonnage 1/3. How many days did it take to complete these tasks?

7. It was originally planned to take 5 hours for the car to travel from City A to City B.. Because there is a bumpy road of 36 meters on the way, the speed of walking this road is equivalent to 3/4 of the original speed, so it is 1/5 hours late. Find the distance between a and b?

1. The grain store sent 30 bags of rice and 40 bags of flour, one * * * is 2500 Jin, and each bag of rice is 50 Jin. How many kilograms is each bag of flour?

The plane flies 860 kilometers per hour, 20 kilometers more than the train. How many kilometers does this train run per hour?

3. Two cars, A and B, left from two places 480 kilometers apart at the same time and met after 3.2 hours. It is known that car B travels 72 kilometers per hour, and how many kilometers does car A travel per hour?

Two ships, A and B, sail from Shanghai to Wuhan at the same time. Spaceship A travels at a speed of 24 kilometers per hour, 8. In 5 hours, Ship A overtook Ship B by 5 1 km. What's the speed of the B ship?

There are 126 cypresses and poplars in the school, and the number of cypresses is six times that of poplars. How many cypresses and poplars are there?

6. The price of air conditioner is three times that of TV set. The school bought an air conditioner and four televisions, which cost 8400 yuan. How much is an air conditioner and a TV set?

7.8 baskets of apples weigh 40 kilograms more than 8 baskets of pears. As we all know, a basket of pears weighs 20 kilograms. How much does a basket of apples weigh?

8. To build a road with a length of 1960m, it is necessary to build 80m a day first. Eight days later, in order to complete the project as soon as possible, it is planned to build 120m in one day. How many days will it take to finish it?

9. Dad is 36 years older than Xiao Fang this year. It is understood that Dad is four years older than Xiao Fang this year. How old are Dad and Xiao Fang this year?

10.A and B two cars leave relatively from two places 420 kilometers apart at the same time. The speed of a car is 1. It's five times that of B car, and we met after 2 hours. Four hours. How many kilometers do cars A and B travel per hour?

1, a piece of steel is meters long, and there are meters left after five identical parts are made. How many meters of steel is used for each part?

2. The number of workers in the first workshop of a factory is 160, and the number of workers in the second workshop is 75% of that in the first workshop. How many people are there in workshop 2?

A batch of 5 tons of goods has been shipped. How many tons are left?

Xiao Ming read a book with a page of 175. After reading part of it, there are 70 pages left. How much is left in this book?

The survival rate of a tree seedling is 90%. How many trees must be planted at least to ensure 450 trees?

Seedling?

6. The outer diameter of a wheel is about 0.8m.. If the wheel rotates 500 times per minute, how many meters can this car run per minute?

7. Wang Ping earned 2 150 yuan in the summer vacation. After deducting 800 yuan, he paid personal income tax at the rate of 5%. How much personal income tax should Wang Ping pay?

8, a project, a team alone 10 days to complete, b team alone 15 days to complete. How many days does it take for Party A and Party B to cooperate to complete half of the project?

9. Dig a canal with a length of 1000 meters. In the first week, the whole length was dug. In the second week, 1000 meters was dug. How many kilometers have you dug in two weeks?

10. There are 25 boys and 20 girls in the school microcomputer group. How many percent are girls less than boys?

1. This farm raised 2000 chickens last year, less than this year. How many chickens have you raised this year?

The ratio of coal consumption in canteens in 2.9 months and1February

At 7: 8, 15 tons of coal was used in two months. How many tons of coal was used in 10?

A township harvested 2800 tons of wheat last year and 3080 tons this year. How much more than last year?

4. 200 seeds were used for germination test, and 4 seeds did not germinate, so the germination rate was obtained.

5. The total number of boys in the science and technology group. 16 after the girls came, boys accounted for 25% of the total number. How many boys are there in the science and technology group?

6. In the picture below, the vertices of the square are all on the circle. The area of a square is 20 square centimeters. How many square decimetres is the area of this circle?

7. To produce a batch of parts, it takes 6 hours for Party A to do it alone, and Party B can make 30 parts per hour. Now Party A and Party B are cooperating. When completing the task, the proportion of parts produced by both parties is 3: 2. How many parts are there in this batch?

8. A sports meeting was held in the animal kingdom, and three kinds of animals took part in the competition. It is known that the speed ratio of fox and rabbit is 2: 3, and the speed of rabbit is twice that of squirrel. It is also known that the squirrel 1 minute runs 15 meters less than the fox, so how many meters does the squirrel 1 minute run?

9. A project will be completed by one person in group A 10 day, and one person in group B will be completed in 30 days. Now the two teams are working together. During this period, Team A rested for 2 days and Team B rested for 8 days (there is no such thing as two teams resting on the same day). How many days did it take from start to finish?

10, Party A, Party B, Party C and Party D go to the fair. Party A left for a period of time, and Party B, Party C and Party D set out to catch up with Party A at the same time. It took 10 minutes, 15 minutes and caught up with Party A in 20 minutes. It is known that each branch of A is 60 meters and each branch of B is 80 meters. Find the square velocity.

1. A cow weighs 850 kilograms, and an elephant weighs more than five times that of this cow, which is 500 kilograms. How much does this elephant weigh?

2. The number of students in Guangxin Primary School is less than that in Hongyang Middle School 1260. It is known that the number of students in Hongyang Middle School is 2. It is five times that of Guangxin Primary School. How many people are there in Hongyang Middle School and Guangxin Primary School?

Xiaolan and Xiao Fang walked in opposite directions from one point on the circular runway at the same time. Xiaolan walks 65 meters per minute, and Xiao Fang walks 75 meters per minute. After 2. Five minutes later, they met. What is the total length of this circular runway?

4. On Arbor Day, students planted 12 rows of poplars, 8 rows of Chinese fir trees, 300 trees in a row, each row 15 trees. How many poplars are there in each row?

The circumference of a rectangle is 64 cm, and the known length is three times the width. What is the length and width of this rectangle?

6. A triangular land with an area of 60m2 and a known base of15m. How high is it?

7. The garment factory wants to produce 6,500 suits, which has been produced for 15 days, with an average of 200 suits per day. The remaining 50 sets will be produced every day. How many days will it take to complete?

8. Two cars, A and B, leave from two places 665 kilometers apart at the same time. The average speed of a car is 82 kilometers per hour, and the average speed of b car is 82 kilometers per hour.

The hourly journey is 73 kilometers, and the difference between the two cars is still 45 kilometers after a few hours.

9. Young Pioneers went to the orchard to pick apples, and picked 14 baskets in the morning, each weighing 25kg; I picked 18 baskets in the afternoon. On this day, I picked 890 kilograms. How many kilos are there in each basket of apples picked in the afternoon?

10. A pen and a ballpoint pen * * * is 8. 3 yuan, the price of a pen is more than twice that of a ballpoint pen. 0.8 yuan. How much is a pen and a ballpoint pen?