If Excel is not highlighting cells in the formula, enable 'Allow editing directly in cells' and 'Enable fill handle and cell drag-and-drop' in Excel options.

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 ...

SERIESSUM function returns the sum of a power series based on the formula. Learn how to use the SERIESSUM function in Excel.

Counting records or values in Microsoft Excel is easy. Counting individual cells by their fill color definitely isn't. Using an old function and a matrix tames the problem.

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