# Arithmetic : Decimals

To multiply decimals, - multiply the numbers in the same way as whole numbers (ignoring the decimal point); and
- insert a decimal point in the result such that the decimal places in the product equal the sum total of the decimal places in all the numbers multiplied.
For example to multiply 1.01, 0.3 and 0.002, the whole numbers are first multiplied to obtain 101 × 3 × 2 = 606. There are two decimal places in 1.01, one decimal place in 0.3 and 3 decimal places in 0.002. So, the product must have 2 + 1 + 3 = 6 decimal places. Thus, 1.01 × 0.3 × 0.002 = 0.000606
For example, 54.1266 × 10 = 541.266, 54.1266 × 100 = 5412.66, 54.1266 × 1000 = 54126.6
GMAT Math Review - Arithmetic : Practice Exercise for Decimals |

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