Click the "Design" tab and then click the "Page Setup" button below it to open the Page Setup window. Change the "Number slides from" box from 1, the PowerPoint 2007 default, to a different number.

It’s easy to add slide numbers to a presentation, but you can also remove those numbers from specific slides.

How to Write an Abstract Using PowerPoint. If you're developing new technologies or business strategies alongside your company's core products, you will most likely write some sort of white paper ...