1. Multiplying Decimals
Lesson 13.2

2. To Multiply: You do not line up the factors by the decimal.
Instead, place the number with more digits on top.
Line up the other number underneath, at the right.
Multiply
Count the number of decimal places (from the right) in each factor.
Use the total number of decimal places in your two factors to place the decimal in your product.

3. Example: 5.63 x 3.7 1 4 2
5.63
two x
3.7
one 1 1 39 4 1 1 + 16 8 9 2 . 8 3 1
three

4. Example: 0.53 x 2.618
2.618 has more digits (4) than 0.53 (3), so it goes on top. 3 4
Decimal Places 1 2
2.618
three x
0.53
two 1 7 8 5 4 13 9 + 00 . 1 3 8 7 5 4
five

5. Try This: 6.5 x 15.3 3 1 2 1
15.3
one x
6.5
one 1 7 6 5 + 9 1 8 . 9 9 4 5
two

6. Practice Time