One of the most important functions of Excel is its capability to perform formulas that assist users to add, multiply, divide, and subtracting numbers ... have a particular column that you ...

You can also manually sum a series of numbers in Excel by typing in a simple SUM formula ... works best when you have a column or row of numbers you want to add up. 1. Click the empty cell ...

Here is the formula for that: = “***-****-” & RIGHT(A1,4) Caveat : When you enter the full number in the first column, be sure to use the dashes, which tell Excel to format the numbers as text. If you ...