Create a New Shortcut Menu

Generally there are three shortcuts in the top menu, which are Save, Undo Typing and Repeat Typing. However, if you want to use more shortcuts, like Copy and Cut, you can set them up as follows:
File->Options->Quick Access Toolbar, add Cut and Copy from the left column to the right, save it. You will see two more shortcuts added in the top menu.

Ref:  http://www.lifehack.org/articles/technology/20-excel-spreadsheet-secrets-youll-never-know-you-dont-read-this.html