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.

To calculate the sum of squares using Microsoft Excel, you need to input a specific formula into the formula bar of the cell you're working with.

The SUMIF Function in Excel There are also more complicated functions in Excel that can sum or count values when certain criteria are met.

Learn how to use Microsoft Excel step by step in this beginner-friendly tutorial. If you're new to Excel or want to understand the basics, this video shows you how to get started using Excel right ...