2, a semiconductor radio, now sells for 165 yuan, 85 yuan lower than last year, a decrease of what percent?
3, a factory **** there are 1,280 workers, of which 620 are women, the number of women workers is less than the number of men by what percent?
4, Guanghua Elementary School has 500 students, 4 sick leave today, the attendance rate today?
5, a worker due to the reform of production technology, the production of a part of the time from 12 minutes to 8 minutes, before the production of 40 parts per day, now the productivity than before increased by what percent?
6, the school brought 34 tons of coal, has been burned 18 tons, burned more than the remaining what percent?
7. 400 seeds were used in a germination test, and 32 seeds did not germinate, what is the germination rate of the seeds?
8, the red flag textile factory *** there are 640 women workers, of which women account for 5/8 of the total number of women workers, how many women workers?
9, a book **** 240 pages, the first day read the book 1/4, the second day read the book 3/8, two days **** read how many pages?
10, the construction site needs 120 tons of cement, the first day to bring the total amount of Germany 1/4, the second day to bring the total amount of 2/5, the second day than the first day of cloud how many tons?
11, grass to lose 80% of the original weight after drying, the existing grass 6.2 tons, how many tons of sun-dried grass?
12, from A to B, A walk the whole course takes 8 hours, B walk the whole course than A more than 1/4 time, find B walk the whole course of time?
13, a wire length of 4.8 meters, the first time to use 1/3 of the length, the second time to use the remaining 60%, how many meters left?
14, a factory has 128 female workers, the number of female workers is 40% of the number of male workers, how many workers in the factory?
15, from place A to place B walked 5/8 of the full length, walked 350 meters, place A to place B full length of how many meters?
16, there are two steel, the first one is 4 - meters long, the first one is 2/9 than the second section, how many meters long is the second one?
17, a savings center in the third quarter of the amount of 1/4 of the annual savings, the fourth quarter savings accounted for 3/10 of the annual savings, the fourth quarter than the third quarter of more than 628,000 yuan, how much annual savings?
18, the tractor can plow a piece of land in 8 days, after 5 days of plowing, there are still 75 acres not plowed, how many acres of this land?
19, a wire cut into three sections, the first section accounted for 1/3 of the length, the second section accounted for 2/5 of the length, the third section is 6.4 meters long, how many meters long this wire?
1. Xinhua bookstore shipped a batch of children's books, the first day of 1800, the second day than the first day to sell 1/9, the remaining 3/7 of the total number of the third day sold out. How many children's books **** this batch?
2. Xiao Ming read a storybook, read 15 pages a day, read 4 days, and then read 1/5 of the book, which is still left 1/5 of the book is not read, the storybook *** how many pages?
3. There was a day milling machine, 2-hour processing of a batch of wheat 2/5, according to the same efficiency processing of the remaining part of this batch of wheat, how many more hours?
4. a school bought a batch of books, placed in two bookcases, the first cabinet of the number of books accounted for 58% of the batch of books, if the first cabinet from the first cabinet to take out 32, put in the second cabinet, then the two bookcases of the books accounted for the batch of books of the 1/2. the batch of books **** how many books?
5. The number of boys in class 6 is 5/8 of the class, and the number of girls is 10 less than the number of boys, how many boys and girls are there in each class?
6. The coal mine plans to mine 36,000 tons of coal in June (30 days), and in fact, the first four days to complete 1/6 of the plan, according to this calculation, how many days ahead of schedule to complete the task?
7. A, B two cars at the same time from the two places relative to each other, car A 40 kilometers per hour, car B 60 kilometers per hour. When the two cars are still 25% of the way to each other, they have spent 1 - hour. Find how many kilometers apart the two places are?
8. In order to measure the height of the bridge, the bridge will be 4 folded rope hanging to the water, the remaining 3 meters, the rope cut off 6 meters, 3 folded and then hanging to the water, the remaining 4 meters, the length of the rope and the height of the bridge, how many meters each?
9. From the east city to the west city to go, after walking the whole road 3/8, from the midpoint of the whole road there are 4 - kilometers, east and west of the two cities are how many kilometers apart?
10, the engineering team is expected to complete a project in 30 days, the first 18 people did 12 days to complete the project 1 / 3, if completed on time and how many more people?
11, fifth grade **** there are three classes, the number of class 1 accounted for 10/33 of the whole year, the number of class 3 than the number of class 2 more than 1/11, if the transfer of 4 people from class 3 after the third class and the number of class 2 is the same number of people. Find how many students are in fifth grade east?
12. a coal mining team has been mining 4800 tons of coal, 80% of the plan to complete the month, according to the efficiency, and then mining how many tons of coal can be exceeded 1/4 of the plan?
13. there is a project, the A team to do alone 24 days to complete, the B team to do alone 30 days to complete. A, B at the same time to do 8 days after the remaining C team to do, and did 6 days to complete this project by the C team to do how many days to complete?
14. a pile of apples, collected all 3/8, filled 3 boxes more than 24 kg, collected the rest of the time, and just filled 6 boxes, how many kilograms of this pile of apples ****?
15. a, b, c three numbers and 320, a number of 1/2 is equal to the number of b 5/6, c number is equal to a, b two numbers of the sum, the three numbers is how much?
1. Processing a batch of parts, Mr. Zhang processing 20 per hour, 7 - hours can be completed, Mr. Li's efficiency is 80% of Mr. Zhang. How many hours will it take Master Li to complete the batch?
2. A and B went to a bookstore to sell their books, and *** brought 54 yuan with them. A used 3/4 of his money and B used 4/5 of his money, leaving them with exactly the same amount of money. How much money did A and B each originally bring?
3. A, B two people in the bank **** deposit a number of dollars, known as a deposit of 1/4 is equal to the deposit of 1/5 of B, and know that B more than A deposit of 24 dollars. Find a, B two people each deposit how many dollars?
4. A factory needs to transport 300 tons of winter coal, the first day into all the 1/4, the second day into the remaining 2/5, the third day finished. How many tons were shipped on the third day?
5. A road repair team builds a road, 20% of its length on the first day, and the ratio of the first day to the second day is 4:5, leaving 440 meters to be repaired. What is the total length of the road in meters?
6. A fertilizer factory is producing a batch of fertilizer, and the original plan was to produce 75 tons per day, which was scheduled to be completed in 20 days. The actual number of tons produced per day is 1/3 more than the planned number of tons per day, how many days did it take to complete the batch?
7. A car traveled from city A to city B in 5 - hours as originally planned. Because 36 meters of the road are uneven, the car arrives 1/5 hour late because it travels at 3/4 the speed it would have otherwise traveled. Find the distance between cities A and B?
1. A grain store carries 30 bags of rice and 40 bags of flour, a **** is 2500 kilograms, rice 50 kilograms per bag. How many kilograms of flour per bag?
2. An airplane travels 860 kilometers per hour, which is 20 kilometers more than six times as much as a train travels per hour. How many kilometers per hour does the train travel?
3. Two cars, A and B, are traveling at the same time from two places 480 kilometers apart, and they meet after 3.2 hours. Car B is known to travel 72 kilometers per hour, how many kilometers per hour car A
4. A and B two ships at the same time from Shanghai to Wuhan, ship A travel 24 kilometers per hour, after 8.5 hours ship A exceeded ship B 5 1 kilometers. How many kilometers per hour does ship B travel?
5. There are 126 cypress and poplar trees in the school, and the number of cypress trees is 6 times that of poplar trees. How many cypresses and poplars are there?
6. An air conditioner price of a TV set of three times, the school bought an air conditioner and four TV sets a *** with 8,400 yuan. How much is an air conditioner and a TV set?
7. 8 baskets of apples than 8 baskets of pears weighs 40 kilograms, known as a basket of pears weighs 20 kilograms, a basket of apples weighs how many kilograms?
8. repair a road of 1960 meters long, first repair 80 meters per day, repair 8 days later in order to complete as soon as possible, and then plan to repair 120 meters per day, how many days to finish?
9. This year, the father is 36 years older than Xiaofang, known that the father's age this year is four times the age of Xiaofang, the father and Xiaofang this year, how many years old is each?
10. A and B two cars at the same time from the distance of 420 kilometers to the two places relative to each other to drive, car A's speed is 1.5 times that of car B, after 2.4 hours to meet. How many kilometers per hour do car A and car B travel each way?
1, a steel is meters long, after making 5 of the same parts left meters. How many meters of steel were used for each part?
2. There are 160 workers in the first workshop of a factory, and the number of workers in the second workshop is 75% of that in the first workshop.
3, a shipment of 5 tons of goods, has been transported , how many tons remain unshipped?
4、Ming reads a 175-page book, and after reading part of it, there are 70 pages left. What percent of the book is left?
5. A sapling has been tested to have a 90% survival rate. How many saplings should be planted to ensure that 450 of them survive
?
6, a kind of wheel outer diameter is about 0.8 meters, if the wheel every minute 500 revolutions, how many meters per minute this car can travel?
7. Wang Ping's summer vacation **** income of 2150 yuan, after deducting 800 yuan to pay personal income tax at a rate of 5%, Wang Ping should pay personal income tax of how many yuan?
8, a project, team A alone 10 days to complete, team B alone 15 days to complete. How many days will A and B together complete half of this project?
9, digging a kilometer-long canal, the first week dug the full length of the , the second week dug kilometers, two weeks a **** dug how many kilometers?
10, the school microcomputer group of 25 boys, 20 girls, girls than boys less than what percent?
1, the feedlot last year to raise 2000 chickens, less than this year , how many chickens this year?
2, the cafeteria nine, ten two months with the ratio of coal is
7:8, two months *** with 15 tons of coal, October with how many tons of coal?
3, a township last year collected 2800 tons of wheat, this year collected 3080 tons, this year than last year's yield increased by several percent?
4, with 200 seeds for germination test, there are 4 did not germinate, find the germination rate.
5, science and technology group of boys accounted for the total number of , and then came 16 girls, boys accounted for 25% of the total number of, science and technology group how many boys?
6. In the diagram below, the vertices of the square are on the circle. The area of the square is 20 square centimeters; what is the area of the circle in square decimeters?
7. To produce a batch of parts, it takes 6 hours for A to do it alone, and B can do 30 per hour. The ratio of the number of parts produced by A and B to the number of parts produced by A and B when the task is completed is 3:2. How many parts are there in this batch of one ****?
8, the animal kingdom held a sports meeting, there are three animals to participate in the race. Known fox and rabbit speed ratio is 2:3, the rabbit's speed is 2 times the squirrel, and know 1 minute squirrel than the fox ran 15 meters less, squirrel 1 minute run how many meters?
9, a project team A alone to do 10 days to complete, team B alone to do 30 days to complete. Now the two teams work together, during this period, team A rested 2 days, team B rested 8 days (there is no two teams on the same day off), to find the start to completion *** with how many days of time?
10, a b c d four people to catch up, a first walked for some time, b, c, d three people at the same time set out to catch up with the front of the a, respectively, with 10 minutes, 15 minutes, 20 minutes to catch up with the a, known as the a 60 meters per branch line, b 80 meters per branch line, seek d speed.
1. A cow weighs 850 kilograms, and an elephant weighs 500 kilograms more than five times as much as the cow. How many kilograms does the elephant weigh?
2. There are 1,260 fewer students in Sunbeam Elementary School than in Hongyang Middle School, and it is known that there are 2. 5 times as many students in Hongyang Middle School as in Sunbeam Elementary School. How many students are there in Hongyang Middle School and Xinguang Elementary School?
3. Xiaolan and Xiaofang walk in opposite directions from a point on a circular track at the same time. Xiaolan walks 65 meters per minute, and Xiaofang walks 75 meters per minute, and they meet after 2.5 minutes. What is the total length of the track?
4. Arbor Day students planted 12 rows of poplar trees and 8 rows of fir trees, a *** is 300, fir trees have 15 trees per row, poplar trees have how many trees per row?
5. The perimeter of a rectangle is 64 centimeters, and the length is known to be three times as long as the width, how many centimeters are the length and width of the rectangle?
6. A triangular piece of land, which has an area of 60 square meters, is known to have a base of 15 meters. How many meters is the height?
7. A clothing factory is to produce 6500 suits, and has been producing them for 15 days, with an average of 200 suits per day . How many days are left to produce 50 more suits per day for the rest?
8. A and B two cars at the same time from the distance of 665 kilometers between the two places relative to each other, car A average 82 kilometers per hour, car B average 73 kilometers per
hour, after a few hours of the two cars are still 45 kilometers apart?
9. Pioneers to the orchard to pick apples, the morning picked 14 baskets, each basket contains 25 kilograms; afternoon picked 18 baskets, this day a **** picked 890 kilograms. How many kilograms of apples per basket were picked in the afternoon?
10. A pen and a ballpoint pen a *** is 8.3 yuan, a pen price than a ballpoint pen twice more than 0.8 yuan. How much is a fountain pen and a ballpoint pen each?