Multiplying Decimals by Decimals 15.46 X 3.6

Set up the problem vertically Set up the problem vertically. Then multiply as if the factors were whole numbers. 15.46 X 3.6 9276 46380 55656 How many decimal places are in the first factor? 2 How many decimal places 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 9276 46380 55.656 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!