It's July 2013, but I found this very simple answer at techtalkz.com by Graham Mayor - Word MVP. (From MS Help)
On the blue toolbar of your document, look at the block with page layout and view styles. If the middle icon, a page with a tiny globe on it, is selected, you will NOT be getting page numbers. This is a WEB layout. Go to the first icon and select it. This is the Print layout and in the toolbar it will give the number of document pages.
As you know, getting the Help search to understand what you want can be tricky. After several tries in which I had said things like "show pages in a document / total pages" etc., I realized that I didn't want help in the document, I wanted help in the toolbar. Using that term brought up a search with Mr. Mayor's blessedly concise and simple information.
Best of luck to all you Searchers out there, and thanks to all you Knowledgeable Ones out there for all your help!