1, 3.6 hours = (3) hours (36) minutes 20 square decimeters = (0.2) square meters.

2, 9580.4 billion (9580040000), rewritten as "ten thousand" is (95800004 million).

3. The decimal unit of 1 45 is (1), and it has (145) such units.

4. The prime factor of factorization 24 is (24=2*2*2*3).

The ratio of 5.2.5: 74 to the simplest integer is (5: 148), and the ratio is (5/ 148).

6.a = 2×2×3，b = 2×2×5。 The greatest common divisor of A and B is (4) and the least common multiple is (60).

7. A map, where 15cm represents the actual distance of 60km, and the scale of this map is (1:400000).

8. In the subtraction formula, the minuend is 50 more than the minuend, the difference is 70 less than the minuend, and the minuend is (120).

9. Make a cuboid with four small cubes, and the side length is 1cm. The cuboid has a volume of (4) and a surface area of (18).

10, the number A is 23 of the number B. If the number B increases by 20, the number B is four times that of the number A, and the number A (? )。

2. True or false: (put "0" in brackets for the right and "╳" for the wrong) 5%

1, a ray is 5 meters long. ( ╳)

2. Two disjoint lines are called parallel lines. (╳) 3. Divide the 3-meter-long iron bar into 5 sections on average, each section is 35 meters long. ( ╳)

The circumference of a circle is in direct proportion to its diameter. ( 〇)

5. For the same distance, car A needs 10 hour, car B needs 1 1 hour, and the speed ratio of car A and car B is10:1. (╳ )

3. Multiple choice questions: (fill in the serial number of the correct answer in brackets) 5%

1. Among the following figures, (③) can be converted into finite decimals.

① 56 ② 724 3 15 ④ 89

2. The two sides of the corner are (②).

① straight line ② ray ③ line segment

3. In the following formula, (3) is an equation.

①2x-8②5–4 = 1③x = 0

4. The volume of a cone is 6 cubic decimeters, and the volume of a cylinder with the same base and height is (③).

① 3 cubic decimeter ② 2 cubic decimeter ③ 18 cubic decimeter

5. The following statement is true (①).

①3 and 5 are prime numbers. ② The product of two prime numbers must be a composite number.

③ The reciprocal of the error score must be less than 1. ④ 1.5 can be divisible by 0.3.

VI. Application problem: 36%

1, only column types are calculated, not calculated. (6 points)

(1) There are 125 male workers in a factory, and the number of female workers is 25 times more than that of male workers. How many women workers are there in this factory?

Solution: 125×3+25

⑵ Two looms finished weaving in 3 hours168m. How many meters does each machine weave on average per hour?

Solution: 136÷3÷2

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(3) Xiao Ming reads books. He read 66 pages in the first three days and 30 pages every day in the last five days. How many pages does Xiaoming read this book every day?

Solution: (66+30×5)÷(3+5)

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The distance between Party A and Party B is 450km. The bus and the truck left relatively from the two places at the same time and met for 5 hours. It is known that the speed of passenger cars is 48 kilometers per hour, and how many kilometers per hour are trucks? (6 points)

Solution: 450÷5-48=42 (km) A:

Or the truck travels x kilometers per hour and gets (48+x)×5=450.

3. It takes 8 days for Party A to finish a job alone, and the work efficiency of Party B is twice that of Party A. How many days does it take for two people to finish this job at the same time? (6 points)

Solution: suppose it takes x days to complete.

( 1/8)X+( 1/8×2)X = 1

4. The sand piled up from the ground forms a cone with a bottom area of 12.56 square meters and a height of 1.2 meters. The sand per cubic meter is about 1.7 tons. How many tons is this cone sand? (6 points)

Solution:12.56×1.2×1/3 ÷1.7 =

5. The machinery plant has 39 tons of coal, which has been burned for 16 days, burning 1.2 tons of coal every day on average. If the remaining coal burns 1. 1 ton every day, how many days can it burn? (6 points)

Solution: (39-1.2×16) ÷1.

6. Two cars, A and B, are driving in opposite directions at the same time, and the speed ratio is 5: 3. A car traveled 37 kilometers, and then 66 kilometers, just met B car ... How many kilometers is there between A and B? (6 points)

Solution: Let A and B be several kilometers apart, so.

(3/7X+66)÷5=X÷3 (3/7 should be written on it, it should be like this, and the answer should be calculated by yourself).