Save this for the spreadsheet jocks in your office—we'd bet even the experts don't know all of these formula tips.

In "The Calculus of Happiness," math professor Oscar E. Fernandez presents a simple formula for splitting a sum fairly with someone else.

Mathematical and logical operations can be performed on a Microsoft Excel workbook with the help of formulas. One of the most common uses of Excel is to compare rows of data by using an IF statement.