If you’re using Numbers in Mac OS X v10.7 (Lion) or later, you can view the application
window in full-screen view, to help you work without distractions. In full-screen view,
the Numbers application window enlarges to fill the space of your entire screen,
moving into a separate space so that you can easily move between Numbers and
To view Numbers in full screen:
Choose View > Enter Full Screen or click the Full Screen button in the top-right corner
of the Numbers window (looks like two outward-facing arrows).
To exit full-screen view, do any of the following::
Press Escape on your keyboard.
Move the pointer to the top of the screen to show the menu bar, and then click the
Full Screen button in the top-right corner of the screen.
Choose View > Exit Full Screen.