# Arithmetic : Decimals

To add or subtract decimals, - write the decimals one below the other such that the decimal points are vertically aligned;
- insert zeros to the right of the decimal fraction to fill any gaps so that all numbers have same number of digits to the right of the decimal point;
- add or subtract the numbers in the same way as whole numbers (ignoring the decimal point); and
- insert a decimal point in the result directly under the decimal points of the numbers added or subtracted.
3.012 5.600 4.890The four rings altogether weigh 19.502 grams.
87.00Rebecca has $77.44 left. Note that subtraction may be always verified by addition, e.g., 77.44 + 9.56 = 87.
GMAT Math Review - Arithmetic : Practice Exercise for Decimals |

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