Question

bài 1 :Nhân nhẩm

a) 1,4 × 10

2,1 × 100

7,2 × 1000

b) 9,63 × 10

25,08 × 100

5,32 × 1000

c) 5,328 × 10

4,061 × 100

0,894 × 1000

Answer 1

a) 1,4 × 10 = 14

2,1 × 100 = 210

7,2×1000 = 7200

b) 9,63 × 10 = 96,3

25,08 × 100 = 2508

5,32 × 1000 = 5320

c) 5,328 × 10 = 53,28

4,061 × 100 = 406,1

0,894 × 1000 = 894

Answer 2

bài 1 :Nhân nhẩm

a) 1,4 × 10 = 14

2,1 × 100 = 210

7,2 × 1000 = 7200

b) 9,63 × 10 = 96,3

25,08 × 100 = 2508

5,32 × 1000 = 5320

c) 5,328 × 10 = 53,28

4,061 × 100 = 406,1
0,894 × 1000 = 894

Answer 3

`a) 1,4 × 10=14`

`2,1 × 100=210`

`7,2 × 1000=7200`

`b) 9,63 × 10=96,3`

`25,08 × 100=2508`

`5,32 × 1000=5320`

`c) 5,328 × 10=53,28`

`4,061 × 100=406,1`

`0,894 × 1000=894`

Answer 4

a) 1,4 × 10 - 14

2,1 × 100 = 210

7,2 × 1000 = 7200

b) 9,63 × 10 = 96,3

25,08 × 100 = 2508

5,32 × 1000 = 5320

c) 5,328 × 10 = 53,28 

4,061 × 100= 406.1

0,894 × 1000 = 894

Answer 5

a) 1,4 × 10 = 14

2,1 × 100 = 210

7,2 × 1000 = 7200

b) 9,63 × 10 = 96, 3

25,08 × 100 = 2508

5,32 × 1000 = 5320

c) 5,328 × 10 = 53,28

4,061 × 100 = 406,1

0,894 × 1000 = 894

Answer 6

a) 1,4 × 10 = 14

2,1 × 100 = 210

7,2 × 1000 = 7200

b) 9,63 × 10 = 96,3

25,08 × 100 = 2508

5,32 × 1000 = 5320

c) 5,328 × 10 = 53,28

4,061 × 100 = 406,1

0,894 × 1000 = 894

Answer 7

a) 1,4 × 10=14

2,1 × 100=210

7,2 × 1000=7200

b) 9,63 × 10=96.3

25,08 × 100= 2508

5,32 × 1000=5320

c) 5,328 × 10=53.28

4,061 × 100=406.1

0,894 × 1000=894

Answer 8

bài 1 :Nhân nhẩm

a) 1,4 × 10 = 14

2,1 × 100 = 210

7,2 × 1000 = 7200

b) 9,63 × 10 = 96,3

25,08 × 100 = 2508

5,32 × 1000 = 5320

c) 5,328 × 10 = 53,28

4,061 × 100 = 406,1

0,894 × 1000 = 894

Answer 9

Bài 1: Nhân nhẩm

a) 1,4 × 10 = 14

2,1 × 100 = 210

7,2×1000 = 7200

b) 9,63 × 10 = 96,3

25,08 × 100 = 2508

5,32 × 1000 = 5320

c) 5,328 × 10 = 53,28

4,061 × 100 = 406,1

0,894 × 1000 = 894