Copying

There are four ways you can copy (or make duplicate copies) of your slides
1) Using the Slides shortcut menu
2) Using the Slide Sorter shortcut menu
3) Using the Mouse.
4) Selecting (Edit > Duplicate).
5) Selecting (Insert > Duplicate Slide).
6) Using the shortcut key (Ctrl + D).

When slides are copied into another presentation, they are automatically adjusted to match the master slide layout for the new presentation.
Embedded charts and graphics are also changed to reflect the new Colour scheme.

Using the Slides shortcut menu

Using the Slide Sorter shortcut menu

Using the Mouse

Holding down Ctrl to create a copy

Using (Edit > Duplicate)

Using (Insert > Duplicate Slide)