For adding Windows Calculator to the Excel Toolbar, follow the following steps. Move the mouse cursor to the upper left-hand corner of your Excel sheet and look for the drop-down arrow.

If you would like to enable Shared Workbook option, here's a way to add it to Excel Quick Access Toolbar. It is hidden under Excel Options.

Google's free add-on for versions of Word, Excel, and PowerPoint in Office 2003, 2007, and 2100 makes it easy to save, share, and sync DOC, XLS, and PPT files to Google Docs.

2/ Add a calculator to the excel toolbar There's a calculator in Excel 2010 but by default this feature is hidden, to get the calculator on your Excel screen navigate to Quick Access toolbar ...