1, 0.78÷3.9, divisor is () decimal, and the decimal points of dividend and divisor are moved to () at the same time, which is converted into () ÷ ().

2. Fill in >, () > () > () > ()

7. find a rule to fill in the numbers.

12.34×9= 1 1 1.06 12.34× 18=222. 12 12.34×27=333. 18

12.34×36=( ) 12.34×45=( ) 12.34×54=( )

Second, please be a small referee. (5 points)

1、 1÷3=0.3 ( )

2. Divide a number by 0.0 1, that is, enlarge this number by 100 times. ( )

3. When dividing two decimal places, the quotient must be less than 1. ( )

4.2.463025 ... is an infinite decimal and a cyclic decimal. ( )

5. Infinite decimal is bigger than finite decimal. ( )

Third, choose a choice with your heart. (10)

1, the following types of China businessmen are ().

a、8.2÷0. 1 B、8.2÷0.0 1 C、8.2÷0.00 1

2. In the figure below, () is a finite decimal.

a、3.4 B、3.44 C、3.44456……

3. One of the following three figures is ().

a、0.95 B、0.95 C、0.95

Quotient of 4.5.04÷6 () 1

A equals b, less than c, greater than.

5. Bind the book with 300 sheets of paper, each with 24 pages, which can be bound into such a book ().

a、 12 B、 13 C、 14

Four, calculation (34 points)

1. Numbers written directly: (4 points)

6÷5= 0.2÷0.4= 1.6÷0.8= 4.2÷2. 1=

0.2×0.6= 4.6÷0.46= 0.52÷52= 7. 1÷0. 1=

2. Longitudinal calculation: (12)

18÷24= 43.68÷26= 25.3÷0.88=

Check calculation:

0. 1575÷3. 15= 0.6 12÷ 1.8= 16.787÷0.28

(Keep one decimal place)

3. Calculation of parting: (12)

2. 139÷9.3×6.2 376- 1.5÷0.24

0.72×0.8÷0.32 4.264÷(0. 16×20.5)

4. Column calculation: (6 points)

What is the quotient of (1)23.79 times 2.6 times 0.56, and (2) what is the product of 8.45 divided by 1.3? 2.6, what is business?

Verb (abbreviation of verb) Application problem: (30 points)

1. A road construction team can be built in 7.5 hours 136.5 meters. According to this calculation, how many meters can be built in 8 hours?

It takes 75 kilograms of cream to make a cream cake. How many cakes can 500 kilograms of cream make at most?

3. Fruit growers should pack 680 kilograms of grapes into cartons, and each carton can hold at most 15 kilograms. How many cartons do you need?

4. The construction team built a highway. It was originally planned to build 1.65km road every day, and it will be completed in 20 days. It actually took only 15 days. How many kilometers of roads are actually built every day?

The standard parts factory used 45,000 kWh of industrial electricity in June this year, and the electricity consumption in July was 2.6 times that in June. How many kilowatt hours have you used in two months?