A complex Excel 2007 workbook could require multiple sheets. By default, Microsoft provides three sheets on each workbook, but you can add as many as you need. Clicking the "Insert Worksheet" button ...

Microsoft Excel 2010 provides a formula for calculating the average value from multiple worksheets in a workbook. Before you apply this formula, check that each worksheet is formatted the same way.

Sometimes hiding certain columns in an Excel spreadsheet can be helpful: Doing so can make spreadsheets easier to read or you may have other reasons to hide them. In any case, hiding columns in ...