You can insert page numbers to appear in the header and footer areas of your documents. Page numbers are particularly helpful with longer documents, especially when you print them out and need to organize the pages.
Click Insert.
Click Page Number.
Click a page location for the numbers.
Click a style.
Word applies the numbers to your document pages and opens the Header & Footer Tools on the Ribbon.
Click Close Header and Footer to exit.
Note
Format Them! To change font, size, or color for page numbers, select the page number in the header or footer area, and apply any formatting from the Home tab, such as making the numbers bold or red. To change the number style, click the Page Number drop-down menu on the Header & Footer Tools Design tab, and then click Format Page Number. This opens a dialog box where you can specify other styles, such as Roman numerals.