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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 9276 46380 55656. How many decimal places are in the first factor? 2. How many decimal places are in the second factor? 1. - PowerPoint PPT Presentation
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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!
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