3. Addition and Subtraction of Decimals

Addition and Subtraction of Decimals

 Addition of decimals,

Addition of numbers numbers is same as addition of whole numbers. The only difference is that we insure that all decimal points will be in same column before addition. We use the following way to add the numbers.
Write the integers of the given decimal numbers one below the other similar that all the decimal points are in the same perpendicular Line.
 Add as you add whole numbers.

Subtraction of decimals

Deduction of numbers numbers is same as deduction of whole numbers. The only difference is to insure that all decimal points will be in same column before deduction.
We use the following way for deduction of numbers.
Write the two numbers numbers, writing the bigger number first in columns similar that the decimal points are in the same column and the integers having the same place values are in the same column.
Decrease the numbers (ignoring the decimal points) as in the case of whole numbers.

Put the decimal point in the result directly under the decimal points of the two given numbers.