SUM is the spreadsheet equivalent of an open invite: it welcomes everything into the total, whether it belongs there or not.

The Autosum function can be used to add or sum Time in Microsoft Excel. You can add hours and calculate the total time in Excel.

If your business uses an Excel file to track sales information, you can use the SUM formula to add up all order totals.

Want to quickly add up rows or columns of data in your gradebook (or elsewhere)? The AutoSum function makes it easy.

Adding a new column to either an entire spreadsheet or just a portion is an easy thing to do in Microsoft Excel. Here's how.