Category name

First, review the calculation questions.

1. calculation. 0.48×0.24= 4.575÷0. 15= 8.7-0.875= 8÷2.7= 8.35+ 1.8=

24.6÷ 12= 7.5×0.6÷7.5×0.6 1÷[( 1.75- 1.5)×0.4] 3.8+5.6÷7×8

2. Simple calculation. 0.56×0. 125 24÷0. 125 48×0.25 4÷0.25 6.42×99

18.65-3.7+ 1.35- 16.3 ( 16.5×24+24×7.5)÷0.6 10.5×60×5×8=

87.5×305-87.5-4×87.5 93÷0.3 1÷3 15.8-4.72-6.28

3. estimate. 4.8×0.49≈ 12.4×0.25≈ 1 1.4÷6.8≈ 32.2÷0.5≈

Second, review the conceptual questions

1. The product of two factors is 5.6, one factor is unchanged, and the other factor is expanded by 6 times, and the product is (); If one factor is enlarged by 100 times and the other factor is reduced by 25 times, the product is ().

2. The quotient of two numbers is 2.4, the divisor is unchanged, the divisor is expanded by 4 times, and the quotient is (); If the dividend is enlarged by 5 times and reduced by 10 times, the quotient is ().

3. After the two factors are simultaneously expanded by 10 times, the product is 68, and the original product is (); Two factors, one is magnified 4 times and the other is reduced 8 times. The product is 32 and the original product is ();

4. Fill in or = in ().

1.46( )0.99× 1.46 1.0 1×7.6( )7.6 29.9×0.33( )2.99×3.3

3.25( )0.52÷3.25 2.04÷ 1.5( )2.04 0.378÷0.27( )37.8÷2.7

5. The smallest unit of RMB is (), so the calculation results generally keep () decimal places. When calculating the speed of a car, it is generally in kilometers per hour, and the decimal place is reserved.

6. Fill in the appropriate numbers in the brackets. ( )× 17=4.76 36.4÷( )= 14 ( )÷ 1.6=36

7. A division formula, the product of divisor and quotient plus dividend, the number is 18.8 and the dividend is ().

8. A subtraction formula, the sum of the minuend, subtraction and difference is 47.2, and the minuend is ().

9. The decimal 3 18.3 18 18 ... can be abbreviated as (), and the cycle segment is (). The number 4 1 after the decimal point is ().

10. A parallelogram can be cut into a rectangle, the length of the rectangle is equal to () of the parallelogram, the width of the rectangle is equal to () of the parallelogram, and the area of the rectangle is equal to length × width, so the area of the parallelogram is equal to ().

1 1. Draw a rectangle as a parallelogram, () is equal, () is not equal.

12. As long as () is equal, the areas of several parallelograms are equal.

13. As long as () is equal, the areas of several triangles are equal.

14. As long as () is equal and () is equal, the areas of several trapezoids are equal.

15,0.05 km2 = () hectare = () square meter = () square decimeter = () square centimeter.

0.5 hours = () minutes 90 minutes = () hours 1.5 years = () months 65438+May = () years.

16. An expressway is 48km long and12km wide, covering an area of () hectares.

17. Because 5×9=45, or 45÷9=5, it can be seen that () and () are both factors of (); () is a multiple of () and ().

18. Because 20÷5=4, it can be seen that () can be divisible by (), and () can be divisible by ().

19. Find all the factors of 30: (); All prime factors ().

20. Write 42 as the multiplication of prime numbers: ().

2 1. Fill in the number as required: 24 30 45 5710251017 48.

A number divisible by 2: ().

Numbers divisible by 3: ().

A number divisible by 5: ().

Numbers divisible by 2, 3 and 5 at the same time: ().

22. The minimum prime number is (), the minimum composite number is (), and their product is ().

23. A square can be divided into two identical () right triangle, () trapezoid and () shape.

24. The factor of a number is finite, and the () of a number is infinite.

25. The product of two different numbers multiplied by () has only four factors. For example: ().

26. The sum of two consecutive even numbers is 30, they are () and (); The sum of two consecutive odd numbers is 30. They are () and ().

27. There are two different prime numbers. Their sum is 20 and their product is 5 1. The larger of these two prime numbers is ().

28. The number of B is 2 less than that of A, and A is 5 times that of B. The product of A and B is ().

29. There are two numbers, the sum is 24, and the quotient of the division of the two numbers is 4. These two numbers are () and () respectively.

30. A number has 45 0. 1, and this number is (); 8.5 includes () 0.00 1.

3 1. The approximate number of a three-digit decimal is 74,500 tons, which keeps the decimal number (), which also means that it is accurate to () 10,000 tons, and also means that it is accurate to (). The maximum value of this three-digit decimal is () and the minimum value is ().

32.20=4×5 is called decomposition (), and 20=2×2×5 is called decomposition ().

33. The area and bottom of triangle and parallelogram are equal, so the height of triangle is the height of parallelogram ().

Third, review the operation questions.

1. Draw a parallelogram and a triangle with a base of 3cm and a height of 2cm respectively.

2. Draw a trapezoid with an upper bottom of 2 cm, a lower bottom of 3 cm and a height of 3 cm.

Fourth, review the judgment questions

1. If one factor is greater than 1, the product is greater than another factor. ( )

2. Divide two numbers. If the divisor is greater than 1, the quotient is greater than the dividend. ( )

3. The decimal point of quotient should be aligned with the decimal point of dividend. ( )

4. Calculate 23.4÷6, quotient 3, and the remaining 54 0. 1. ( )

Multiplication can be used to check the result of division. ( )

6. Each car is limited to 48 people, and 60 people need 1.25 cars. ( )

7. It takes 1.8m cloth to make one garment, and 4.5m cloth can make three garments. ( )

8.4.2 12 1 ... greater than 4.2 12 1. ( )

9. The smallest even number is 0, the smallest natural number is 1, and the smallest prime number is 2. ( )

10. There are three red balls and two white yellow balls in the pocket, and six red balls and four white yellow balls in the pocket. The probability of touching the red ball is 3/5. ( )

1 1.a, b and c are not zero. If A is three times that of B and B and four times that of C, then A is seven times that of C. ()

Verb (abbreviation of verb) Review application problems.

1. It is planned to build a 48-meter-high wharf. If the construction is carried out at the speed of 2.82 meters in three days, can it be completed in 5 1 day?

2. Xiaohua's weight is 28.5kg, his father's weight is 1.2 times that of his mother, and his mother's weight is 1.8 times that of Xiaohua. How many kilograms are mom and dad?

3. 0.47 kg of oil can be extracted from each kg of rapeseed, and how many kg of oil can be extracted from 3250 kg of rapeseed? (Numbers are reserved as integers)

The following table shows the usage of water, electricity and gas in Ming Ming's home in August. Please complete the statistics by calculation.

Payable amount of nominal unit price of actual consumption in July and August (yuan)

Water (m3) 2.50 yuan/m3 78.283

Electricity charge (kWh) 0.52 Yuan/kWh 65 1.8 739.3

Gas (m3) 1.78/ m3 105 150

The first four months and the last eight months.

20.8 tons 4 1.6 tons

5. The water consumption of Primary Seven students' home this year is as follows. How many tons of water is consumed on average every month?

6. A blackboard is 3. 1 m long and 0. 2m wide. If you draw this blackboard with 9.6 yuan per square meter, how much will it cost per square meter?

7. Taxi billing. Starting price 8 yuan. After 3 kilometers, it will be charged per kilometer 1.8 yuan. The place I want to go is 72 kilometers from the starting point. But when I was 28.5 kilometers away from my destination, I got off the bus because of something. How much do I have to pay? (Results are rounded)

8. A story book has 300 pages, and each page has about 0.55 thousand words. The first 180 page of it is a story about China, and the second half is a story about foreign countries. How many words are there in foreign stories?

9. The toll standard for expressway vehicles is 0.5 yuan per kilometer (including tunnel), plus 20 yuan tunnel fee. How much does it cost for a car to travel 78.4 kilometers (including the tunnel) from A to B?

10. A road repair team repairs 0.85 kilometers of roads every month. How many kilometers can eight such road repair teams build in half a year?

1 1. Uncle Wang paid 400 yuan money and stayed in the hotel for 8 days. When he left, the waiter gave him 12 yuan. How much is uncle Wang's accommodation every day?

12. Xiaoming goes from home to school. Walk 3.5 kilometers per hour, and you can get there at 0.8. If he walks 4 kilometers per hour, when should he leave home at the latest in order to get to school before class starts at 8: 0015?

13. Xiao Fang made a division formula, taking the divisor 6 as 9, and the calculated quotient was 2.7. What is the correct quotient?

14. Make a rectangular sketchpad with the length of1.2m. If the area is 1. 14m 2, what should the width be?

15. Cabbage of the same quality, Uncle Li 2 kg 3.6 yuan, Aunt Yang 4 kg 6.8 yuan. Which is more favorable?

16. With the completion of the reconstruction of Hechuan-Taihe Highway, the mileage has been shortened from 36 kilometers to 30 kilometers, and the speed has been increased from 30 kilometers to 40 kilometers per hour. How many minutes is the driving time less than before?

17. Select the telephone billing standard. Category I: the monthly rent for each mobile phone is 12 yuan, and it is 0. 1 minute/0 yuan; Category II: Free monthly fee of 0.20 yuan per 1 minute; Aunt Li's average monthly talk time is 150 minutes, which is more cost-effective?

18. Master Tang's car has 10 liter of gasoline, which can travel 6.5 kilometers per liter. Master Tang is going to work in Chongqing from Taihe. If the mileage from Taihe to Chongqing is 1 17 kilometers, how many liters of gasoline do you need to add to the round trip?

19. The height of a parallelogram with a base of 90 meters is 1.8 times. If you harvest 9800 kilograms of wheat per hectare, how many kilograms of wheat can this land harvest?

20. Enclose a 60-meter-high trapezoidal land with a 200-meter-long fence against the wall. What is the area of this trapezoidal land? 3.5 tons of rapeseed were harvested in this field, and how many kilograms of rapeseed were harvested on average per hectare? (The result is reserved to one decimal place)

2 1. A pile of logs with isosceles trapezoid cross section. It is known that the top layer has 12 logs, and the bottom layer has 20 logs, and the bottom layer has 1 more logs than the top layer. How many pieces of wood are there in this pile?

22. Xiaohong's chickens don't lay more than 50 eggs every day. There are 1 left in two plots, three plots and three plots, and four in five plots. How many eggs are there at most? How many eggs are there at least?

23. The price of sugar is 500g 4 yuan. Shopping mall new year promotion, buy 1 kg to send 250 grams. Uncle Wang needs 5 kilograms of sugar. How much should it cost? How many Jin of sugar can 64 yuan buy?

24. A car travels from city A to city B at a speed of 48.5 kilometers per hour. 2.4 hours later, there are still 27 kilometers from the midpoint. How many kilometers is the whole journey?

25. A workshop produces 1200 parts in 25 days, and finishes the task 5 days ahead of schedule. How many parts were originally planned to be produced on average every day?

26. a barrel of oil weighs 12kg, and it weighs 6.5kg after half of it is used ... how much does this barrel weigh? How many kilograms does this oil weigh?

27. The school spent 3200 yuan to buy 50 sets of single tables and chairs. It is known that the cost of three chairs is equivalent to 1 table. What is the unit price of tables and chairs?

28. All factors of A are 1, 2, 3, 4, 6, 8, 12, 24; The multiple of B from small to large is 24, 48, 72, 96...A What is the sum of A and B?

29. Of the three prime numbers within10, the largest three digits that can be divisible by 3 and 5 at the same time are () and the smallest three digits are ().

6. Find the area below. (Unit: cm)

10