I. Fill in the blanks:

1, 73 at least increases () to be divisible by 2, at least increases () to be divisible by 3, and at least decreases () to be divisible by 5.

2. Fill in the appropriate score

1.5L = () cubic decimeter 40L = () ml.

25 minutes = () 2750g = () kg

3 tons 400 kg = () tons 1 hour 35 minutes = () hours.

3. Divide the 5-meter-long iron wire into 6 segments on average, each segment is 5 meters long ().

The greatest common factor of 4.28 and 42 is (), and the smallest common multiple is ().

The minimum common multiple of 14 and 2 1 is (), and the maximum common factor is ().

5. A number consists of four 1 and eight 0.00 1. This number is written as a fraction (), converted into a decimal (), and two decimal places are reserved as ().

6. The decimal unit of125 is (), and the decimal unit such as () needs to be added to be equal to the minimum composite number.

7, 25 =12 ÷ () = 24 () = () ÷100 = () (decimal)

8. A cuboid with a length of 5 decimeters, a width of 4 decimeters and a height of 2.5 decimeters has a surface area of () and a volume of ().

9. The sum of all the simplest true fractions whose denominator is 12 is ().

10, a cubic water tank with a side length of 8 decimeters, containing 490 liters of water. Pour water into a rectangular water tank with a length of 10 decimeter, a width of 7 decimeters and a height of 8 decimeters. The water depth in the water tank is ().

Second, choose the serial number of the correct answer and fill it in brackets.

The maximum factor of 1.A number is exactly equal to the minimum multiple of b number, and a number is compared with b number ().

A, the number a is greater than the number b, the number a is less than the number B C, and the number a is equal to the number B D, which cannot be determined.

Add 5 to the molecule of 2. In order to keep the size of the fraction unchanged, the denominator should be ().

A, add 5 B, add 6 C and multiply it by 5

3. Among the following scores, () cannot be converted into a limited score.

a、35 B、26 C、 17

4, a basket of apples, two for one, three for one, four for one, five for one, all just finished eating, no remainder. This basket of apples should have at least ().

a， 120 b，90 c，60 d，30。

5. If A, B and C are natural numbers greater than 0, A

a、gt； b 、& ltc 、=

6. In the following three diagrams (each square), the surface area development diagram is () instead of a cube.

A, B, C,

7. The bottom of a cuboid is a square with an area of 3 square meters, and its side development diagram is just a square. The side area of this cuboid is () square meters.

A, 18 B, 48&nb