() is 45; 6 is (); 15 is 25 ()

The reciprocal of p>16 is (); The reciprocal of half is ().

hours = () hours () minutes; (16 points)

2.) = ÷ () =+() = 1-() = () × 9 =

()× .25 = 1. (12 points)

3. A: B =, then when A=18, B = (); When B=18, A=( )(4 points)

4. If the number A is b, then the number A is ()% more than the number B, and the number B is ()% less than the number A.. (4 points)

5. In 3: 2, if 6 is added to the preceding paragraph, the ratio should be kept constant, and () should be added to the latter. (2 points)

6. A triangular vegetable field, the ratio of side length is 3: 4: 5, and the circumference is 84 meters, of which the shortest side length is () meters. (3 points)

7. Sampling inspection of a commodity shows that 38 items are qualified and 2 items are unqualified. The qualified rate of this commodity is () ℅ (2 points)

8. The simplest integer ratio of: 1.75 is (), and the ratio is () (4 points)

9. The bottom of a cylinder. Its volume is () cubic centimeters. (12 points)

1. The diameter of the bottom of a cone is 2 decimeters, the height is 9 decimeters, and its volume is () cubic decimeters. (2 points)

11. Cut the largest circle on a square cardboard with a side length of 1cm. The area of this circle is () cm2, and the remaining scraps are () cm2. (4 points)

12. The circumference of a rectangle is 42cm, the ratio of its length to width is 4∶3, and its area is () cm2. (2 points)

13. Weld a cube frame with 72cm long iron wire (excluding the interface). The edge length of this cube frame is () cm, the volume is () cm3, and the surface area is () cm2. (9 points)

14. The volume of a cone is 9.42 cubic decimeters, the diameter of its bottom is 6 decimeters, its height is () decimeters, and the volume of a cylinder with the same height as its base is () cubic decimeters.

(6 points)

15. Dissolve 12 grams of salt in 88 grams of water, when the salt accounts for () %(2 points) of the salt water.

16. Observe the picture on the right. The school is in the direction

of () () degrees away from Xiao Ming's home, and the distance is about () meters.

(8 points)

17. What the observation object sees from the () surface is; What you see from the () surface is; What you see from the () surface is. (6 points)

18. A cylinder has the same height as a cone, and the volume of the cylinder is 1.8 cubic meters more than that of the cone, and the volume of the cylinder is () cubic meters. (2 points)

report 1. After the woodworker finishes the door frame, in order to prevent deformation, he often nails two diagonal battens as shown in the figure. The mathematical reason for this is _ _ _.

2. In a subtraction formula, the sum of the minuend, the subtraction and the difference is 24, and the subtraction is 3/5 of the difference. Then the difference of this subtraction formula should be ().

3. 3/4 of A is equal to 2/3 of B. The simplest ratio of A to B is (): ().

4. a three-digit number, whose single digit is a, whose ten digits are b and whose hundred digits are c, should be recorded as ().

5. divide the 8-meter-long iron wire into 5 parts, each part is 1 () and 3-meter (), and each part is () meters long.

6. Li Shifu assembled a TV set, and the work efficiency increased by 1%, so the time was reduced ().

7. There are two natural numbers. Their greatest common divisor is 8 and their smallest common multiple is 24. These two natural numbers may be (), () or ().

8. For a basket of apples, each person is divided into two and one, each person is divided into three and one, and each person is divided into four and one. There are at least () apples in this basket.

9. For a simplest fraction, the sum of the numerator and denominator is 92. If all the numerator and denominator are subtracted by 16, the obtained fraction is simplified to 1/3, which is () of simplest fraction.

1, carefully observe the following number string and fill in the appropriate number.

（1）2，3，5，8，13，（ ），（ ），34，?

（2）2，6，12，2，（ ），42，?

11.199771 is pronounced as (). Rounding to ten thousand places is recorded as () ten thousand.

12.8 tons and 5 kilograms = () tons; 2.4 cubic decimeter = () cubic decimeter () cubic centimeter

The fractional unit of 13.7/12 is (), and it has () such fractional units.

14. The smallest composite number is (), and its reciprocal is ().

the least common multiple of p>15． 12, 18 and 24 is (). The greatest common divisor of 12 and 18 is ().

16. The ratio of peach trees to pear trees in the orchard is 5: 3. There are 4 peach trees and pear trees, () peach trees and () pear trees.

17. () The statistical chart can not only show the quantity, but also clearly show the change of quantity.

18.6 may be the least common multiple of which two numbers, please write them all out separately; ( )。

19. A rope was cut and then connected to it for 9 meters, and the result was longer than the original. This rope was originally () meters long.

2. a rectangular piece of paper, the length of the long side is 19 cm, cut off the largest square, and the circumference of the remaining small rectangular piece of paper is ().

21.1984 is pronounced as (), and rounded to ten thousand digits is ().

22. When a number is divided by 2, 3 and 7, the result is 1, and the minimum number is ().

23. The product of two prime numbers is even, and one of them must be ().

24.2kg is 2% lighter than (). () meters are longer than 5m.

25. Four times the number of A is the number of B, and the ratio of A to B is ().

26. A section of electric wire, which is () meters long, is cut off and then connected with 4 meters, and the result is longer than the original electric wire.

27. The average number of A and B is 16, and the average number of A, B and C is 2, so the number of C can be calculated as ().

28. when a commodity is reduced by 1% during the promotion period and then increased by 1% after the promotion, the commodity price is the original price ().

29. A work started on June 1st and was originally scheduled to be completed in one month. In actual construction, the task was completed on June 25th, and it was overfulfilled by June 3th () %.

3. The surface area of a cuboid is 4cm2. If this cuboid is cut into two equal cubes on average, if two such cuboids are spliced into a cuboid, the cuboid will be.

31. The number of A is 21 and the number of B is 3, and the number of A is less than that of B ()%.

There are 29 students in Grade p>32 and Grade 5, 16% more than girls, and there are () girls.

33, 365.555 writing ().

34. A triangular vegetable field has a side length ratio of 3: 4: 5 and a circumference of 84 meters, of which the shortest side length is () meters.

35. The ratio of the circumference to the diameter of a circle is ()

36, and when it is 3.6 = (), () points

37. It takes 4 days for Party A and 5 days for Party B to complete the same work alone, and the work efficiency of Party A is ()%

38. A commodity is sampled and tested, and 38 pieces are qualified.

4. The hour hand of a wall clock is 5 cm long, and its tip has gone () cm overnight.

41. The base of a triangle is 4 cm long and 2 cm high. The ratio of the area of this triangle to the area of a parallelogram with the same base height is ().

42, 2/3 of A is equal to 3/4 of B, and the simplest integer ratio of A and B is ().

there are (339) natural numbers less than 4 without the number 8.

2. There are nine copper coins, one of which is fake, and the authenticity is only different in quality. If you weigh it at least (8 times) with a balance without weight, you can definitely find out the fake copper coins.

3. There is a warehouse every 1 kilometers on the highway, with ***5 warehouses. Warehouse 1 has 1 tons of inventory, warehouse 2 has 2 tons of inventory, warehouse 5 has 4 tons of inventory, and the other two warehouses are empty. Now, I want to put all the goods in one warehouse. If it costs 1 yuan freight to transport 1 km of goods per ton, it will cost at least (1,) yuan.

No.1, 1 km, No.2, 1 km, No.3, 1 km, No.4, 1 km, No.5,

1 tons, 2 tons, 4 tons

There are 27 students in Grade 4 and Grade 6 * *, and 2/11 of the boys and 7 girls are selected to participate in the math competition. The remaining students are the same number of boys and girls, and there are 97 girls in Grade 6.

5. Xiaolan and Xiaoli play a guessing game. Xiaolan writes a four-digit decimal on the straight bar for Xiaoli to guess. Xiaoli asked, "Is it 631?" Xiaolan said: "I guessed a number correctly and the position was correct." Xiaoli asked again, "Is it 5672?" Xiaolan said, "I guessed the two numbers correctly, and neither of them is in the right position." Xiaoli asked again, "Is it 4796?" Xiaolan said, "I guessed four numbers correctly, but none of them were in the right position." Can you infer the four digits written by Xiaolan from the above information? 6974

6. If 2 rabbits can be exchanged for 2 sheep, 8 sheep for 2 pigs and 8 pigs for 2 cows, how many rabbits can be exchanged for 4 cows? 64

7. Light light blue is 8 years old this year, and my father is 38 years old. How old is Light light blue, and my father is exactly four times as old as Light light blue? 1

8. Weimin cold drink shop can change one soda bottle for every three empty soda bottles. Lan Lan bought 99 soda bottles in the summer vacation and changed them with empty bottles after drinking. So how many soda bottles can she drink at most? 147

9. In a division formula, the sum of dividend, divisor, quotient and remainder is 75, the known quotient is 8, the remainder is 2, what is the dividend and divisor?

58 7

1. There are two iron wires with the same length. The first one is minus 3cm, the second one is minus 18cm, and the remaining length of the second one is twice that of the first one. How many centimeters is left in the second iron wire? 24

11. There are 1, 2, 3, 4, 5, 6, 7, 8 and 9 cards, with three cards each. A said, "The product of my three cards is 48", B said, "The sum of my three cards is 15" and C said, "The product of my three cards".

238 564 179

12. How many different rectangles can be enclosed by 24 cm long iron wire (the length and width are whole centimeters, excluding the joints)? What are the areas? Compare it again. What can you find? 6

13. Master Zhang is used to taking two days off every five days of work. Recently, I received the task of producing 33 parts. He produces 3 parts every day. How many days will it take to complete this task? 15

On Sunday, Xiaohui took a taxi to visit her grandmother 8 kilometers away. When taking the bus, he looked at the fare list on the taxi: 8 yuan within 5 kilometers; More than 5 kilometers per kilometer in 2 yuan. How much should Xiaohui pay for the fare when she arrives at grandma's house?

14

15, a decimal, if its decimal part is expanded by 4 times, it will get 5.4; If you enlarge its decimal part by 9 times, you get 8.4. What is this decimal? 3, 6

16. The average height of Party A and Party B is 1.66 meters, that of Party B and Party C is 1.7 meters, and that of Party A and Party C is 1.65 meters. What is the average height of Party A, Party B and Party C?

1。 67

17. The sum of the three numbers of A, B and C is 27. The number of A is three times that of B, and the number of B is twice that of C. What are the numbers of A, B and C?

18 6 3

18. There are two coal yards A and B. Coal yard A has three times the coal storage capacity of coal yard B. If 18 tons are transported from coal yard A to coal yard B, the coal storage capacity of the two coal yards is equal. How many tons are stored in coal yards A and B respectively?

54 18

19. Five players are doing exercises in a row, and one new player can't stand at the head of the row. How many different ways are there?

96

There are 5 students in Class 2 and Class 6 (1), 25 students can swim, 28 students can do gymnastics, and 5 students can't. How many students can swim and do gymnastics? 8

21. It takes 6 hours for the ship "Youth" to travel 12km downstream in a river, and 2 hours for the ship "Youth" to travel 28km upstream. How many hours does it take this ship to sail 34 kilometers in still water?

2

22. Arrange all the simplest false scores with denominator of 15 from small to large, and ask the numerator of the 99th false score.

214

23. Make a bouquet with 96 red flowers and 72 white flowers. If the number of red flowers in each bouquet is the same, so are the number of white flowers. How many flowers are there in each bouquet?

84

2. There are 24 students * * * who take part in large-scale group calisthenics. They stand in a row facing the coach, and press 1, 2, 3, 4, ... in turn from left to right. The coach asks each student to remember the number he reported and do the following actions: first, let the students who reported a multiple of the number 3 turn back, then let the students who reported a multiple of 5 turn back, and finally. 34+8+48-16-6-11 = 162-33 = 129

1. It took 6.5 hours for the mountain village postman to send mail from the post office over the top of the mountain to the user's home. His speed of going up the mountain is 3 kilometers per hour, and his speed of going down the mountain is 5 kilometers per hour. What should I do to return by the same way with the constant speed of going up and down the mountain?

4.7

1. 8 8 3 3 Calculate 24 with+-*/().

2.3377 Calculate 24 with+-*/().

3. The bus is 19 meters long and the truck is 24 meters long. The two cars are moving at the speed of 2 meters per second and 23 meters per second respectively. On the double track.