Spread the loveMicrosoft Excel is a powerful software program that allows users to store, manipulate, and analyze data. One of its most popular features is the ability to perform calculations using ...

Select the cell in your Microsoft Excel document that you would like to use for the sum of squares function and open the "Formulas" tab.

We show you how to use the SUM formula in Excel, how to use the AutoSum feature and how simple additions with the plus sign work.

To fix an Excel spreadsheet not adding up correctly, check the SUM function's syntax and make sure there aren't any text format cells in the sheet.