**> Adding - Using Front End Estimation of Sums <**

**Adding-using Front End Estimation of Sum**

When finding the sum of several numbers, one

way to estimate the sum is called "front-end'

estimation.

In front end estimation of sum you add only the

first digit of the numbers. The other digits are

replace by zeros. Example:

Add 5524 and 3452 using front end estimation of sum.

Front end addition

Front-end estimation always gives a sum

less than the actual sum.

Normal addition