Calculate the difference between two values in your Microsoft Excel worksheet. Excel provides one general formula that finds the difference between numbers, dates and times.

Microsoft Excel: How to Find Missing Numbers in a Sequence. Locating missing sequential numbers can be an arduous task when working with long lists of data. For example, you might want to locate ...

SUM is the spreadsheet equivalent of an open invite: it welcomes everything into the total, whether it belongs there or not.

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