Multiplying Decimals by Decimals

15.46 X 3.6

Set up the problem vertically. Then multiply as if the factors

were whole numbers.

15.46 X 3.6 92764638055656

How many decimalplaces are in the first factor? 2

How many decimalplaces are in the second factor? 1

2 + 1 = 3

Start on the right and count over three places and insert the

decimal point.

15.46 X 3.6 92764638055.656

2+1=

3

Let’s try a few. You put the decimal point in the answer.

0.9 X 0.3 = 027

0.2 X 0.4 = 008

1.7 X 0.6 = 102

2.46 X 0.8 = 1968

How did you do?

0.9 X 0.3 = 0.27

0.2 X 0.4 = 0.08

1.7 X 0.6 = 1.02

2.46 X 0.8 = 1.968

You are cleaning up!