Inserting page number in OpenOffice Writer is not as straight-forward process as in Microsoft Word. But never fret, the process is quite easy actually but just involved extra steps in OpenOffice. First we need to add header or footer in our pages depending on where we want the page number to appear. Do this by clicking:
Insert > Header > Default or Insert > Footer > Default
Next, add the page number by doing this:
Insert > Fields > Page Number
That’s all it takes to add page number in OpenOffice Writer.