Multiplying and Dividing Decimals by 10, 100, and 1,000

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Presentation transcript:

Multiplying and Dividing Decimals by 10, 100, and 1,000

The Basics: When you multiply by 10, 100, or 1,000, you can move the decimal point to the right. The number of decimal places you move is the same as the number of zeroes you are multiplying by. When you divide by 10, 100, or 1,000, you can move the decimal point to the left. Move the decimal point once for each zero you are dividing by.

1.492 x 100 Move the decimal to the right: two spaces. 149.2

2,124.94 ÷ 1,000 Move the decimal to the left: three spaces. 2.12494

4.2 ÷ 100 Move the decimal point to the left: two spaces. Add a zero for the second space. .042

15.36 x 1,000 Move the decimal point to the right: three spaces. Add a zero for the third space. 15,360

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