Class name _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

1. Numbers written directly (10 points)

23×4= 40×70= 16×5= 130×6=

220×4= 300×20= 14×50= 50×80=

120×50= 9×40= 125×8= 250×4=

0×7+5= 9×9-9= 8×3+5= 8×70=

17×5= 2 1×30= 140×6 9×40=

Two. Fill in the blanks (10)

1.()×( )= total price ()× () = total output.

() × () = distance () × () = total work.

2.5 186 is () bit, and the mantissa after omitting the highest bit is ().

3.59×4≈( ) 297×7≈( )

4. The number of A is 400, the number of B is twice that of A, and the sum of A and B is ().

5. The product of the minimum two digits and the maximum two digits is ()

6. The product of120× 50 has () zeros at the end.

3. Column calculation: (18 points)

863× 12= 207×40= 304× 16=

350×30= 5 12× 15= 89×40=

4. True or false: (5 points)

1. Single output = total output × quantity. ()

2. Multiply the positions of two factors, and then check the multiplication operation. ()

The product of the minimum two digits and the maximum two digits is 220. ()

4. The product of two digits multiplied by three digits must be five digits. ()

5. It is estimated that 495×5 is approximately equal to 2500. ()

Verb (abbreviation of verb) formula calculation: (9 points)

What is 27 times of 1? 1 14?

2. The number A is 12 1, and the number B is 36 times of it. What is the number b?

3. These two factors are 35 and 22 respectively. What is the product?

6. Is the following calculation correct? If there is a mistake, correct it. (6 points)

208 156 205

× 47 × 39 × 43

196 1494 6 15

1 12 468 802

13 12 6 174 8635

Eight. Calculation: (12 points)

36× 12÷6 25×(324-284)

900÷6×40 (65+38) × 17

Nine. Application problem: (30 points)

1. Write the quantitative relationship of the following questions before solving them. (5 points)

The workshop of the advanced youth group is equipped with 120 tape recorders every day. How many tape recorders can be assembled in 20 days?

Quantitative relationship: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Formula: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

A: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

The car travels 42 kilometers per hour, and the speed of the plane is 35 times that of the car. How many kilometers does this plane fly per hour? (5 points)

3. The road team built a road with a length of1.260m, and repaired 65m every day. Repaired 1.4 days. How many meters are left to be repaired? (5 points)