Reorder slides
If you want to change the order of slides in a presentation:
Open a presentation.
Select the slide you’d like to move. You can also choose to move several slides:
Select several slides in a row: Press the Shift key and click the last slide in the row.
Select slides that aren’t in a row: Press and hold the Ctrl key (Cmd on a Mac) and click the slides you want to move.
Drag-and-drop the slides to a new position in the list of slides on the left. You can also go to the Slide menu and choose from the following options:
Move slide up
Move slide down
Move slide to beginning
Move slide to end