1,A batch of grapes weighed 250 kg when they were put into the warehouse and their moisture content was measured to be 99%, and after a period of time, their moisture content was measured to be 96%, so how many kg of grapes did the grapes weigh at that time

2,The fifth grade did a big cleanup, and the original plan was to send students to mow the grass on the playground and the rest of the students swept the ground. When the actual labor, there are two students to participate in weeding, so the number of weeding is the number of sweeping, the original plan to send a few students weeding

3, two layers of books **** 112, if the second layer of the first layer of the two layers of the number of books is equal to the number of books, the second layer of the number of books

4, Bright Elementary School, the original number of boys and girls is 7:5, and later transferred to the 12 girls, at this time, the number of boys and girls is 9:5. The ratio of the number of boys and girls is 9:7, the school now has how many girls

5, there is a 5.6-meter-long bamboo pole inserted into the pool, the surface of the water, the rest of its inserted in the mud. Asked how many meters deep the pool

6, agricultural company from the first team to transfer people to the second team, then the second team of people just the first team, known as the second team of the original 22 people, the first team of the original how many people

7, Xiaoming read a book plans to use 20 days, the results of 5 days to read the book 40%, according to such a speed, how many days ahead of the finish (proportionality)

7, Xiaoming read a book planned to use 20 days, results 5 days to read the whole book 40%, according to such speed, how many days ahead (proportionality)

8, there is a pile of a pile of a pile of a pile of a pile of a pile of a bamboo sticks inserted into the pool, exposed to the water, its remaining inserted in the mud. p>8, there is a pile of fruit, apples accounted for 45%, after putting 16 kg of pears, apples accounted for 25% of this pile of fruit *** how many kilograms of apples

9, a cube into a cylinder of the largest known volume of 392.5 cubic centimeters cylinder, find the volume of the square is how many cubic centimeters

10, experimental school sent 60 players to participate in the "children ok to participate in the "children ok race", in which female players accounted for, the official competition, there are several female players absent for some reason, so that the number of female players into the total number of participants, the official participation of female players how many people

11, a cylindrical glass with water, water depth 2.5 cm, the inside of the glass bottom area is 72 square centimeters. In this cup put into the prism length of 6 cm cubic iron, the water surface did not submerge the iron, and the water did not overflow, then the depth of water how many centimeters

12, the kindergarten purchased a number of books, science and technology books are picture books and story books, picture books are science and technology books and story books, story books, story books, there are 15, asked how many books science and technology books and picture books

13, a water conservancy project, a and B two teams to repair 30 days to complete, if the two teams to repair 12 days, the rest of the team by the B team to do alone and then do 24 days to complete, A and B alone to do this project requires a few days

14, Gongnong elementary school in the fourth grade there are two classes of A and B, the number of A class is the number of B class, if the transfer of three from the B class to the A class, A and B class number of the ratio of 4:5, how many people in each of the original class

15, a water conservancy project, the A class, the A class is the number of people in each class

15, a water conservancy project, the A class has the same number of people in each class

15, a water conservancy project, the A class has a different number of people in the A class. A water conservancy project, A alone to do 8 days to complete, B alone to do 4 days to complete, A and B cooperation, in the middle of the A due to illness rested for 1 day, to complete the task, B worked a few days

16, bus from A to B to travel 10 hours, trucks from B to A to travel 15 hours, the two cars at the same time from the two places in the direction of each other, meet the bus than the trucks more than the line 80 kilometers, find the distance between A and B

17, A and B

17, A and B to the two places <

17, a class assembly, the number of leave of absence is the number of attendees, halfway there is a leave of absence, so that the number of leave of absence is the number of attendees, the class **** how many students

18, production of a batch of parts, the master alone to complete the 8 hours, known as teacher-disciple efficiency ratio is 4:3, the apprentice alone to complete the amount of time required (proportionality)

18, the production of a number of parts, master alone to complete the 8 hours, known as teacher-disciple efficiency ratio is 4:3, how much time is needed (proportionality)

19, the master alone to complete the work, the master alone to complete the work (proportionality)

19, an individual to tomatoes and eggplants ****385 kg, tomatoes sold, eggplant sold, the remaining two kinds of vegetables of equal mass, how many kilograms of tomatoes and eggplants shipped

20, A and B, two bags of rice weight ratio is 3:10, if B to A 20 kg, this is A and B, two bags of rice weight ratio is 7:6, how many kilograms of the original two bags of rice each weight

20, A and B two bags of rice weight ratio is 3:10, if B give A 20 kg, this is A and B, two bags of rice weight ratio is 7:6, how many kilograms of the original two bags of rice

21,A and B two sticks in the pool, the length of the two sticks and is 190 cm, A stick has exposed the surface of the water, B stick has exposed to sleep, find the depth of water is how many centimeters

22,A and B two cars from the east and west at the same time to the same time, known as a speed ratio of A and B is 2:3, the A car to go the full course of the Xu5 hours, ask the two cars to meet a few hours after the drive

23, the production of a forklift from the original 7 hours reduced by 4.5 hours, the original production of 140 units per day, how many units per day now (with the positive and negative proportions of the solution)

24, a work, A alone to do 40 days, B alone to do 60 days, now two people cooperate to do, in the middle of the A due to illness rested for a few days after 27 days to complete the work, the A rested for a few days

25, reading a book, the ratio of read and unread is 3:4, if you read another 50 pages, the read is not read twice, the book **** how many pages

26, there is a size of two gears and each other bite and gears, the big gear has 48 teeth, the pinion has 32 teeth, if the big gear every minute to turn 100 revolutions, the pinion 20 seconds how many revolutions (proportionality)

27, the passenger car from A to B to travel 6 hours. to B to travel 6 hours, trucks from B to A to travel 4 hours, now the two cars at the same time from the A and B two places to start, relative to the line, the results of the meeting in the 18 km from the midpoint of the place, meet the trucks line how many kilometers

28, A and B two warehouses of the weight of the original goods ratio is 7:5, if the A warehouse to the B warehouse 26 tons, this time, the A warehouse is a warehouse of the B warehouse, the A warehouse has how many tons of goods

29, A warehouse has how many tons of goods

30, a warehouse has how many tons of goods

31, a warehouse of the B warehouse, a warehouse has how many tons of goods

29, a radius of 30 centimeters of the circular tin cut off, with the remaining part of the roll into a lampshade, the radius of the lampshade bottom circle is how many centimeters

30, the height of a 4-minute cylinder of the bottom of the average divided into a number of sectors, after the cylinder is cut, assembled into a rectangle and it is equal to the bottom of the height of an approximation of the rectangular body, rectangular body of the surface area of the surface area than the cylinder increased by 120 square centimeters, the original volume of the cylinder is how much

31, there is a pile of fruit, apples accounted for 45%, after putting 16 kg of pears, apples accounted for 25% of this pile of fruit *** how many kilograms of apples

32, the fruit warehouse shipped to the moisture content of 90% of a kind of fruit 400 kilograms, one week later to measure, and found that the moisture content decreased to 80%, now the total weight of this batch of fruit is the weight of the fruit. The total weight of this batch of fruit is how many kilograms

33, a and b two cars respectively from a, b two places at the same time to go in the same direction, a hour line 80 kilometers, b hour line 10% of the whole, when the b line to the whole time, a car and then the whole line to reach reach the b, a, b how many kilometers away from each other

34, the two piles of coal is equal in weight, from the A pile of 2.5 tons taken out and put into the B pile, then the A pile of 2.5 tons. into the B pile, then the weight ratio of A and B two piles of coal is 3:5, how many tons of coal in the original pile of A

35, the school purchased a number of science and technology books and storybooks, science and technology books accounted for the total number of books, and later purchased 80 science and technology books, this time, the science and technology books accounted for the total number of books, how many books the school original **** purchased

36, A walk through the distance between the two towns in 4 hours, B walk through 6 hours. Finish need 6 hours, if A by the east town, B by the west town at the same time to start, and walk in the opposite direction, when they meet, A more than B line 12 kilometers, find the distance between the east and west two towns

37, a project, A and B to cooperate in 8 days to complete the work, A alone to do 12 days after the B team alone to do the work for 6 days, which completed the entire project, A alone to do the work takes how many days

38, school The ratio of the number of art interest group and music interest group is 5:4, halfway there are 7 people to participate in the art interest group, then the ratio of the number of the two groups is 8:5, how many people in each of the original two interest groups

39, the master to do a part of 5 minutes, the apprentice to do a part of 9 minutes, if the master and the apprentice to work together 168, ask how many each of the two people to do

40. a Project A and B two teams to do 12 days to complete, first by the A team alone to do 6 days, the rest of the B team then do 21 days to complete the project. If all the B team to do how many days to complete

41, a project A alone to do 2O days to complete, B alone to do 30 days to complete. A and B together to do 3O days, B because of leave, from the start to finish **** with 14 days to complete, B leave a few days

42, bus from A to B to travel 1O hours, truck from B to A to travel 15 hours, the two cars at the same time from the two places in the direction of each other, when they meet the bus than the truck traveled more than 8O kilometers. Find the distance between A and B

43, there are 27O parts, A alone to do 5 days to complete, B alone to do 4 days to complete, these parts are divided into two people to do, if you want to finish at the same time each person should be divided into how many

44, agricultural equipment factory production time per piece of agricultural equipment from the original 7 minutes reduced by 4,5 minutes, the original production of agricultural equipment l40 pieces per day, how many pieces of agricultural equipment per day (with). positive and negative proportional solution)

45, paving a workshop with a side length of 4 decimeters to pave the square tiles, need 16OO pieces; now change to use a side length of 5 decimeters to pave the square tiles, how many pieces (proportional)

46, there is a large and small two gears biting each other, the large gear has 96 teeth, the pinion has 16 teeth; if the large gear every minute to turn 1OO revolutions, how many revolutions in 40 seconds the pinion (Proportional)

47,There is a pool of water, when the water becomes ice, its volume increases by l/11; when the ice turns into water, the volume decreases by a few percent

48,A box of light bulbs to take 168, and then take the remaining 2/3, there are still l/7 of the total number of light bulbs left, how many light bulbs **** this box

49,Sixth grade there are 1/5 of the people who participate in the extracurricular activities group, and the number of students who participate in the extracurricular activities group is 1/3 of the total number of students. participate in extracurricular activities group, and then there are 2 students to participate in extracurricular activities group, the actual number of participants is the remaining l/3, how many students participated in the original extracurricular activities group

50, A and B two training team original number of people than 4:3, from the A team to transfer 48 people to the B team, and now the number of people of A and B two teams than 2:3, how many people the original A team

51, a factory first. A factory first. Two. Third quarter production of machines is 75% of the year, third. The fourth quarter of the production of machines is 45% of the year, know that the third quarter production of machines 2OO units, how many units of machines produced by the factory throughout the year

52, a job is divided equally between A. B two people to do, A needs 5 hours, B needs 8 hours to complete, two people can do a few hours to complete

53, A and B warehouse **** there are 168O tons of grain storage, from the A warehouse to remove 3/4, from the B warehouse to remove the 2/3 of the two warehouses of the remainder of the grain is equal to the two warehouses of the A and B warehouse of the original grain of how many tons

54, the average score of the exam of a class - is 7O points, of which 3/4 of the people pass, their average score is 8O points, the average score is 8O points, the average score is 8O points. Their average score is 8O points, find the average score of those who failed

55, a ship sailing with the water 1O kilometers per hour, against the water 6 kilometers per hour, find the average speed of the ship to and from

56, A and B and is 52, A. C and is 55, B. C and is 57. C and is 57, how much is A, B and C

57,Clock 4 o'clock to strike 4, 6 seconds to strike; then 12 o'clock to strike 12, how many seconds to strike (tree planting problem)

58,A certain commodity sold at the price can be 96O yuan profit, if the price of the 8O% sold, then the loss of 832 yuan, how much is the purchase price of goods is the yuan (profit problem)

59, concentration of lO%, the weight of 8O grams of sugar water, add sugar how many grams of sugar to become a concentration of 2O% of sugar water (concentration problem)

60, - a cylindrical bucket put people - a section of the radius of 5 cm of the round steel, if it is all put into the water bucket of water on the rise of 9 centimeters; if the water of the round steel exposed to the surface of the water for 8 centimeters, then this time the bucket of water fell by 4 centimeters, the volume of the round steel

60, - a cylinder bucket to put people - section of 5 cm of circular steel, if it all put in the water bucket of water rose 9 centimeters; if the round steel exposed 8 centimeters of water, then this bucket of water dropped 4 centimeters, find round steel

61, the base of the cylinder is divided into 4O equal parts, and then cut it into an approximate rectangle. He knows that the perimeter of the base of the rectangle is 16.56 centimeters, the height is 8 centimeters, find the volume of the cylinder (hands-on)

62, passenger ships and cargo ships from the two ports of A and B at the same time, relative to each other, the passenger ship from Port A to Port B, every hour line 3O kilometers; cargo ship from Port B to Port A, every hour line of the whole 1/36. When the passenger ship from Port A, 18O kilometers, the cargo ship exactly When the passenger ship is 18O kilometers from port A, the cargo ship is exactly 12O kilometers from port B.

63, victory elementary school has three extracurricular groups: science and technology group has 1O people, accounting for the total number of three groups of 2O%, arts group and sports group ratio is 3:2, how many sports group

64, the end of the fall harvest, Mr. Zhang harvested a pile of rice. After leaving enough for his family, he was ready to sell the rest of the rice. Beforehand, he learned about the market: paddy 1.50 yuan per kilogram, rice 2.20 yuan per kilogram, the rice yield of paddy is 70%. If the paddy is processed into rice, the chaff will cover the processing costs. The first 25 days paved 40%, according to this progress, the highway can be completed on schedule (with different methods of solving the problem, more than one kind of extra points)

66, Xiaoming has a number of yuan. The first time he used 2/5 of the money, he got 24O yuan, and the second time he used l/3 of all the money, he still had 72O yuan left, how much did he use the first time (backward)

67,A and B classes **** there are l35 students, and the sum of 4/7 of the number of A class and 4/5 of the number of B class is 92 students. A. How many students in each of the two classes (hypothetical method)

68,operation: there are five cakes of the same size, to be divided equally among six small Mingyou, so that each child gets 2 pieces, and each person to take the same method, how it should be divided Draw a schematic diagram.

69, Wang Hong this year 9 years old, Wu Jiang this year l9 years old, a few years ago Wu Jiang's age is Wang Hong age 3 times (age problem)

A project, team A alone to do 15 days to complete, team B alone to do 12 days to complete, the two teams together to do a number of days after the rest of the team B to do alone to be completed in 3 days, ask A, B team together to do a number of days

70, A, B team*****************************, the two teams together

70, A, B team **** to do the same thing, and each person take the same way, how should be divided Draw a diagram. A, B two groups *** with the production of a batch of parts, group A alone to do 5 days to complete, group B alone to do 3 days to complete. The two groups cooperated in a day to do 1600, how many of this batch of parts

71, there is a full of water in a rectangular glass cylinder, there is a section of the bottom area of 3.14 square decimeters of the cylindrical ingot, when the ingot is removed from the glass cylinder, the water surface of the cylinder fell by 0.5 decimetres, known as the bottom area of this rectangular glass cylinder is 28.26 square decimetres. Seek the length of this cylinder ingot is how many decimeters

72, A, B two cars from A, B two places at the same time relative to the drive, driving 4 hours later, the two cars have met and 75 kilometers apart, known as the A, B two cars per hour can be driven the whole of the 7/24, A, B, two places how many kilometers

73, a city cab fare is as follows:

Li

Fare/yuan

Below 5km

10.00

After 5km, the fare for each additional 1km

1.20

1) The fare for a cab traveling a mileage of 15km should be ( )yuan;

2) The maximum mileage of a cab with 30 yuan now is ( )kilometers.

74, a rectangular length, width, height of 3, 2, 1 cm, a small insect from a vertex, crawling along the rib, if the request does not take the repeated route, the insect back to the vertex at the time of departure, the longest path is ( )cm

75, A and B two construction team original cement weight ratio is 4:3, when the team A to the team B, 54 tons of cement, the team of cement, A and B cement weight ratio is 3:4. how many tons of cement the original team A

76, a cylinder with a diameter of 10 cm along the diameter of the longitudinal cut, the surface area increased by 200 square centimeters, the original volume of this cylinder is how many cubic centimeters

77, a cylindrical container is empty, b rectangular container of water depth of 6.28 centimeters, to the container B in all the water into the container, then the depth of water, how much is it? container, how many centimeters deep is the water

A B

(unit: cm)

factory production of a part by the original 8 minutes reduced by 5 minutes, the original production of 150 parts per day, how many parts can be produced every day

Ming from home to the school, it takes 35 minutes on foot, riding a bicycle as long as 10 minutes. He rides his bicycle from home, but after 8 minutes it breaks down and he walks instead. How many minutes did it take for Ming to go from home to school

Two engineering teams, A and B, if 30 people are transferred from team A to team B, the number of people in the two teams is equal; if 10 people are transferred from each of the two teams, the number of people left in team B is 25% of that in team A. How many people were in each team

What is the number of people in each team? The original two teams have how many people

Fast and slow two cars from the A and B two places relative to each other, the fast car first full and 11 kilometers after the slow car to drive out. When they meet, the slow car has traveled 11 kilometers of the whole journey. Known fast, slow two car speed ratio is 5:4. a B two places how many kilometers apart

A rectangular block of wood, it all the prongs of the sum of 108 cm, it's length, width, height ratio of 4:3:2. Now to cut this rectangle into a cylinder with the largest volume, the cylinder volume is how many cubic centimeters

Two bookshelves **** books 282, A bookshelf number of the 3 / 3 of the bookshelf number, and the number of the bookshelf number is the number of books. The number of books on shelf A is 3/4 of the number of books on shelf B is 5/9 of the number of books on shelf B. How many books are there on each shelf? How many books are on each of the two shelves

84,Please put a code in parentheses if the following statement is correct ( )

A. The area of a circle is proportional to its radius;

B. The volume of a square is proportional to the length of its prongs;

C. The area of a triangle is proportional to its height;

D. The area of a rectangle is proportional to the width of a rectangle. is inversely proportional to its width.

85, a washing machine factory plans to produce 8500 washing machines this year, of which the number of (1) type and (2) type ratio of 1:2, (1) type and (2) type of the number of ratio of 3:4, the three kinds of washing machines are planned to be produced are ________ units, _________ units, __________ units, respectively.

86, Zhang Songguang students have a number of deposits, buy treasury bills with the deposit, buy a variety of reference books remaining, the last remaining 80 yuan, asked Zhang Songguang students original deposits of how many yuan

87, the right figure is a bicycle, the active has 54 teeth, the driven wheel has 18 teeth, the rear wheel diameter of 1 meter, if the pedal 2 times per second (that is, the active wheel to turn 2 times), the bike an hour can travel kilometers. hour can travel ____________ kilometers.

88, as shown in the figure, an object consists of three cylinders, their radii are

0.5 decimeters, 2 decimeters, 5 decimeters, and the height is 2 decimeters, then

. The surface area of this object is ( ) square decimeters

89,51% of the students in a school are boys, and the boys want to go to Peking University in the future, and some of the students who want to go to Peking University in the whole school are boys, so what percent of the girls in the whole school want to go to Peking University. (10 points)

90,Build a highway. The ratio of the repaired to the unrepaired length is 1:4, and after repairing another 75 meters, the ratio of the repaired to the unrepaired length is 8:17, then the length of the highway is ( ) meters.

91, there is a piece of fabric, can make 4 sets of adult clothing or 7 sets of children's clothing, known to make a set

92, a birthday cake, cut into five equal parts of each piece is 80 grams heavier than cut into seven equal parts of each piece, how much does the birthday cake weigh

93, . Choose the appropriate scale and draw the paper in the box below.

Scale:__________

94, Compare the degree of crowding in two pools, the result is ( ).

(1)Pool A is crowded(2)Pool B is crowded(3)The two pools are the same

95,A and B two construction team original cement weight ratio is 4:3, when team A gave 54 tons of cement to team B, A and B two teams of cement weight ratio is 3:4. how many tons of cement the original team A

96,Vegetable market there are greens, radish **** 1600 kg, it is known that radish accounted for 60% of them, and then a number of vegetables, then radish, the weight ratio of vegetables is 4:3, ask how many kilograms of vegetables now vegetables

97, a cylindrical pipe, inner diameter of 20 centimeters, the speed of the water flow is 4 meters per second, this water pipe can flow through how many cubic meters of water in one minute

98, there is a length of 20 centimeters, a radius of 2 centimeters of round steel, at each end of it drills a hole. It is drilled at each end of a depth of 4 centimeters, the bottom radius of 2 centimeters of conical holes made into a part, as shown in the figure of the volume of this part is how many cubic centimeters

99, a height of 3 decimeters, the diameter of the bottom of 20 centimeters of cylindrical bucket filled with water, the water was placed in the bottom of the diameter of 18 centimeters, the height of 15 centimeters of the iron cones, when the iron cones out, how much water will change? What changes will occur How the results

The chorus transferred 6 people to the track team, the chorus and track team number of people than 3:4, the chorus of the original number of people

101, in a circle, its radius as the length of the side to do a square, the square is known to be the area of 16cm2, the area of the circle is ( ).

102,There are two piles of coal, the original first pile and the second pile of coal stock ratio is 12:7, from the first

103,There are two grain silos, the original A silo stock than the B silo 1.5t more than the B silo, from the A silo after transporting 9.9t,

104,Fast car from A to B, slow car from B to A, the two cars at the same time relative to each other to drive out of the 8h to meet, then Each continue to drive 2h, this time, the fast car from B has 250km, slow car from A has 350km, the distance between A and B is how many kilometers

105, there is a full of water in the rectangular glass cylinder, put a section of the bottom area is 3.14 square decimeters of the cylinder ingot, when the ingot is taken out of the glass cylinder, the water inside the cylinder fell 0.5 decimeters, known that the bottom area of the rectangular glass cylinder is 3.14 square decimeters of the cylinder ingot, when the ingot is taken out of the glass cylinder, the water inside the cylinder fell 0.5 decimeters, known as the The bottom area of the rectangular cylinder is 28.26 square decimeters. What is the length of this cylindrical ingot?