This article will show you how to insert a new (blank) slide into your PowerPoint presentation.
Steps
Method 1 of 2: On Mac OS X

Step 1. Double click on the PowerPoint presentation to open it

Step 2. Click on the blank space between the two slides in the sidebar
The sidebar is located on the left side of the PowerPoint window and contains thumbnails of all slides in your presentation; if you click on the blank space between two slides, you indicate where the new slide will be added.

Step 3. Click Insert
This tab is in the upper-left side of the screen.

Step 4. Click Create Slide
It's on the menu under the Insert tab. The new slide will be added to your PowerPoint presentation.
To change the position of a slide, drag it up or down in the sidebar
Method 2 of 2: On Windows

Step 1. Open your PowerPoint presentation
To do this, double-click the presentation, or start PowerPoint and select the presentation from the Recent Documents list.

Step 2. Right-click on the blank space between the two slides in the sidebar
These should be the slides between which you want to insert a new slide. A menu will open.

Step 3. Click Create Slide
It's near the bottom of the menu. The new slide will be added between the two selected slides.
To change the position of a slide, drag it up or down in the sidebar
Advice
- To copy a slide from one presentation to another, right-click (or click with two fingers) on the slide thumbnail in the sidebar and choose Copy from the menu. Then right-click in a blank space in the sidebar of another presentation and choose Paste from the menu.
- To insert a new slide, you can also click in the sidebar and press ⌘ Command + M (Mac) or Ctrl + M (Windows).