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.

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.

How to Add the Difference Range In Excel. The simplest way to add cells in Microsoft Excel is using the plus operator, such as "=A1+A2," but that method fails when adding different ranges.

How to Add Paragraph Breaks in Cells in Excel for OS X. Because Excel's primary purpose is to display, organize and calculate numerical data such as your business' profits or expenses, the "Enter ...