If you're working on a single monitor, toggle between the two instances of Excel -- hover your cursor over the icon in the system tray -- to view the multiple sheets in separate windows.

You can sum cells across multiple sheets in Excel. This article presents steps for Adding single-cell values or Adding values in the range of cells.

Open Excel and click on the File menu. Select the Options. Ensure that you are in the General tab. Find the When creating new workbooks menu. Head to the Include this many sheets option. Enter a ...

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 ...