When you apply Microsoft Excel's percentage number format to a cell already containing a number, it multiplies the value by 100. This can be frustrating, as there's apparently no easy way to stop this ...

When you type a seven-or-ten-digit phone number into an Excel cell that uses the phone number format, Excel will automatically change the way the number looks so that it appears as a phone number. If ...

A Social Security number consists of three strings of digits separated by hyphens. Historically, the first was an area number, which relates to the resident's geographic location; the second was a ...

Random number generation is an essential feature in Excel, allowing users to perform tasks such as simulations, creating test datasets, or experimenting with spreadsheet models. Excel provides three ...

Is Apple’s iWork a viable alternative to Microsoft Office? To find out, we asked Rob Griffiths—our go-to expert on spreadsheets—to use Excel 2008 and Numbers ‘08 to create the same project, ...