Important: If you turned on iCloud Drive for Pages (in System Preferences on your Mac), deleting a document from iCloud Drive removes it from iCloud and from all other devices and Mac computers that use the same Apple ID.
If you don't know where the document is, locate it first.
Select the document, then do one of the following:
Drag the document to the Trash icon in the Dock.
Press Command-Delete on the keyboard.
To empty the Trash (and permanently remove the document from your computer), click and hold the Trash icon in the Dock, then choose Empty Trash.
If you're working on a new document that hasn’t been named or saved yet, and you don’t want to keep it, close the document, then click Delete in the Save dialog that appears.
If you open an existing document, edit it, then decide you don’t want to keep any of your changes, you can revert the document to how it was when you opened it.