Learn how to how to increment numbers when value changes in another column. You can automatically fill increment cells in Excel such that the increment value across each cell remains constant.

Highlight the cells and drag the fill handle down. Excel will automatically fill in the other odd numbers into the cells. You can do the same with the even numbers.

How to use Excel’s Flash Fill feature, including a keyboard shortcut for both Windows and Excel for Mac.

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