You can sum cells across multiple sheets in Excel. This article presents steps for Adding single-cell values or Adding values in the range of cells.

How to Add a Footer to All Sheets in Excel. Adding a footer to all of your sheets in an Excel workbook is a good way to ensure continuity between each sheet, especially if you are printing them out.

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