1. Multiplying & Dividing by Powers of Ten

2. 126 x 10 = 1260 . When multiplying, move the decimal to the right.
1260 .
When multiplying, move the decimal to the right.
How many times?
Count the zeros.

3. 7.21 x 10 = 72 1 . When multiplying, move the decimal to the right.
72 1 .
When multiplying, move the decimal to the right.
How many times?
Count the zeros.

4. .809 x 100 = 00 . 80 9
When multiplying, move the decimal to the right.
How many times?
Count the zeros.

5. 61.3 x 1,000 =
000
61300 .
When multiplying, move the decimal to the right.
How many times?
Count the zeros.

6. 61.3 ÷ 1,000 = 000 0613 . When dividing, move the decimal to the left.
How many times?
Count the zeros.

7. 3 3
326 x 10 =
326000 .
When multiplying, move the decimal to the right.
How many times?
Look at the exponent.

8. 5 5
.996 x 10 = .
99600
When multiplying, move the decimal to the right.
How many times?
Look at the exponent.

9. 32.6 ÷ 10 = 326 . 2 2 When dividing, move the decimal to the left.
How many times?
Look at the exponent.

10. * When MULTIPLYING by a power of ten, move the decimal to the RIGHT.
* When DIVIDING by a power of ten, move the decimal to the LEFT.
* How many times?
* Count the zeros
or look at the exponent. 5
4.6 x 1,000 =
4.6 x 10 =