Once you create and modify some slides to make them just right, don't reinvent the wheel! Create copies to base your new slides on.
- Select the slide you want to duplicate.
- Click Slide on the menu bar.
- Select Duplicate Slide.
Press Ctrl + D or right-click the slide and select Duplicate Slide.
The slide is duplicated, and inserted right after the initially selected slide.
If you want to insert a duplicate of a slide in another part of the presentation, you can copy and paste entire slides as well