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四年级数学练习 16

Total questions: 15

Worksheet time: 45mins

Name
Class
Date
1.

2.3 x 10 =

a)

0.23

b)

2.3

c)

23

d)

230

2.

2.45 x 100 =

a)

245

b)

24.5

c)

2.45

d)

0.245

3.

0.245 x 10 =

a)

24.5

b)

245

c)

2450

d)

2.45

4.

34.5 x 100 =

a)

34500

b)

3450

c)

345

d)

3.45

5.

以下哪项是正确的?

a)

9.367 x 10 = 936.7

b)

0.588 x 1000 = 588

c)

4.38 x 1000 = 438

d)

0.779 x 100 = 7.79

6.

5.83 x 9 =

a)

5247

b)

45.47

c)

52.47

d)

53.47

7.

38 x 26 =

(a)  

8.

1457 x 25 =

(a)  

9.

9 x 7 =

(a)  

10.

12 x 420 =

(a)  

11.

147 x 23 =

(a)  

12.

42 + A = 15 + 37

(a)  

13.

Y - 23 = 27 + 27

(a)  

14.

35 x 28 =

(a)  

15.

12 x 12 =

(a)