You can sum a series of numbers in Microsoft Excel manually by typing in a simple formula, or automatically with a tool.

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.

This tutorial will show you how to create a Formula to Add, Subtract, Multiply or Divide in Microsoft Excel. You can do basic calculations easily!

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.

How to Do the Sum of an Indefinite Series in Excel. The Microsoft Excel program includes a variety of mathematical formulas that you can apply to any cell in a spreadsheet.

You can't use a SUM() function to sum a filtered list, unless you intend to evaluate hidden and unhidden values. Here's how to sum only the values that meet your filter's criteria.

Every Excel expert knows how to navigate without a mouse and how to format data using keyboard shortcuts. But do you know how to insert a sum without typing the formula?