Why should I use SUM function?
Sum is one of Excel’s basic functions, which is used in order to sum a range of cells in Excel.
Without sum function, we can still sum cells in Excel in the old fashioned way:
Instead of summing cells one by one, we can use the SUM function!
How to use the SUM function
In order to use the SUM function, we will start by typing the SUM formula, then select the cells which we would like to sum:
And, this is the result: