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Quick, clean, and to the point

Go to previous workbook

Windows shortcut 
CtrlShiftTab
Mac shortcut 
⌃⇧Tab

Move to next / previous workbook window.

222 Excel Shortcuts for Windows and Mac

Related videos

The videos below demonstrate this shortcut.
How to navigate a workbook
In this video, we find your way around a an Excel workbook, and how to see where you are now.
Shortcuts to navigate workbooks
In this lesson, we cover shortcuts you can use to navigate workbooks.