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. It also provides some ...

In my review of Numbers ’09, I included a tip about entering formulas using the keyboard. In the event that not all of you choose to read the Numbers review from top to bottom, here’s the tip, along ...

The simplest way to start documenting Excel formulas like a coder is by using the N () function. Although its primary job is to convert non-numeric values into numbers, it has a hidden quirk: because ...