Firstly you need to select all sheets. To do this, click on the first tab (sheet) and then go on to the last tab while pressing Shift + Left click. You will know that the tabs are all selected as they ...

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.

Spreadsheets are supposed to save time, but sometimes they just make things messier. I hated digging through endless menus until I found a handful of formulas that do the heavy lifting for me. VLOOKUP ...