Numbers that are stored as text can cause unexpected results, especially when you use these cells in Excel functions such as SUM and AVERAGE because these functions ignore cells that have text ...

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. If your business uses ...

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