Quickly open recent files in Microsoft Word and Excel
Quickly open recent files by first pressing "Alt+F" to open the file menu and press 1, 2, 3, or 4 or the number in front of the recent document you want to open.
In Microsoft Word and Excel 2010, you need to enable recent documents feature before being able to use this tip. To enable recent documents click File, Recent, and at the bottom of the Recent window check the box next to Quickly access this number of Recent Documents:. You can also increase or decrease the amount of recent documents shown in the box to the right of this option.
Unfortunately, in versions of Microsoft Word and Excel after 2010 this tip no longer works.