Closing a Spreadsheet Without Quitting Numbers
When you have finished working with a spreadsheet, you can close it without
Here are ways to close the active spreadsheet and keep the application open:
To close the active spreadsheet, choose File > Close or click the close button in the
upper-left corner of the Numbers window.
To close all open spreadsheets, press the Option key and choose File > Close All or
click the active spreadsheet’s close button.
If you’ve made changes since you last saved the spreadsheet, Numbers prompts
you to save.