1. Multiplying and Dividing by powers of ten

2. PLACE VALUES of the digits in this number?5 3 7 4 8 2
What are the
PLACE VALUES of the digits in this number?

3. 5 3 7 4 8 2
So that means

4. just separates the whole numbers from the decimal fractions5 3 7 4 8 2
The decimal point
just separates the whole numbers from the decimal fractions

5. What happens when I multiply this number by 10 ?5 3 7 4 8 2
What happens when I multiply this number by 10 ?

6. 5 3 7 4 8 2
Each digits value will become 10 times bigger so the digits move LEFT into the next column

7. Multiplying by 10
x 10 =
It LOOKS like the decimal point moves one place to the right. (and that is how many teachers ask you to think of it)

8. Multiplying by 10
Moving the digits one place to the LEFT looks the same as moving the decimal point one place to the RIGHT. 5 3 7 4 8 2 5 3 7 4 8 2

9. More Multiplying and Dividing
Digits Move
( LOOKS LIKE )
Decimal Point Moves
x10
One place to LEFT
One place to RIGHT
x100
Two places to LEFT
Two places to RIGHT
÷ 10
÷ 100

10. I hope I haven’t LEFT you confused but I thought we should get this RIGHT
Thanks for watching.