Addition of Decimals | Subtraction of Decimals

Addition and Subtraction of Decimals

Addition and Subtraction of Decimals

In addition of decimals or subtraction of decimals, we should arrange the decimal numbers vertically in such a way that their decimal points be in the same vertical line. After the decimal point for any number, we can put as many zeros as the place value needs. Then the operation of addition or subtraction is done as normally as in the case of whole numbers.

For example:

Addition (+): 3.12 + 12.923 + 124.5769
Example - addition of decimals


Subtraction (–): 15.102 – 9.89
Example: Subtraction of decimals

Look at the following workout examples.


Workout Examples

Example 1: Add the following decimal numbers.
a.    2 + 3.25 + 5.32
b.    12.5 + 13.05 + 14.005
c.     3.5 + 12.56 + 123.987

Solution: Here,
Example 1: Solution


Example 2: Subtract the following decimal numbers.
a.    5.62 – 0.999
b.    2 – 1.9
c.     17.32 – 8.92

Solution: Here,
Example 2: Solution


Example 3: Simplify: 12.65 – 3.22 – 1.25 + 5.32

Solution: Here,
                        12.65 – 3.22 – 1.25 + 5.32
                    =  9.43 – 1.25 + 5.32
                    =  8.18 + 5.32
                    =  13.5   


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