You can add headers and footers that appear on every page. Headers and footers can include text and page numbers.
Tap
in the toolbar, then tap Document Setup.
Tap the areas above or below the document body to type header and footer text.
You can use just one or any combination of the three fields for your header or footer.

Tap Done in the top-left corner of the screen to return to the document.
Tap any text in the header or footer.
Document Setup view opens.
Select the text you want to delete, then tap Delete, or tap
.
Tap
in the toolbar, then tap Document Setup.
Tap the section of the header or footer where you want the number to appear, then tap Page Numbers.

Tap a page numbering style.
Tap Done in the top-left corner of the screen.