To add a blank page to your document, click where you want the new page to begin, and then on the Insert tab, click Blank Page.
Tip: Another option when you need a little space is to add a page break. A page break won't insert a blank page but it will move whatever comes after the break to the top of the next page.
Find blank pages
If you’re formatting a complex document, you can use the Navigation Pane to quickly scroll through the document to find blank pages.
Click View > Navigation Pane > Pages.
Note: To remove a blank page from your document, see Delete a blank page.