Free Printable แบบฝึกคิดเลขเร็ว ชุดที่ 6

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Worksheets

แบบฝึกคิดเลขเร็ว ชุดที่ 6

Total questions: 10

Worksheet time: 8mins

Name

Class

Date

1.

1. 10 x 10 = 5 x ?

a)

100

b)

50

c)

25

d)

20

2.

2. 20 x 10 = 4 x ?

a)

50

b)

100

c)

150

d)

200

3.

3. 20 x 15 = 5 x ?

a)

300

b)

150

c)

60

d)

30

4.

4. (7 x 8) + (7 x 9) = 7 x ?

a)

15

b)

16

c)

17

d)

18

5.

5. 196 = 4 x ?

a)

49

b)

50

c)

51

d)

52

6.

6. 480 = 4 x ?

a)

100

b)

120

c)

140

d)

160

7.

7. 510 = 3 x ?

a)

140

b)

150

c)

160

d)

170

8.

8. 9,090 = 10 x ?

a)

990

b)

909

c)

90

d)

99

9.

9. 172 = 4 x ?

a)

40

b)

43

c)

45

d)

48

10.

10. 250 = 5 x ?

a)

50

b)

60

c)

70

d)

80

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