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Multiplying Decimals by Decimals

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.

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Multiplying Decimals by Decimals

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  1. Multiplying Decimals by Decimals 15.46 X 3.6

  2. 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

  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

  4. 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

  5. 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

  6. You are cleaning up!

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