Plus
Orange Plus Powerpoint background is a nice background design with a plus image as a background.
Pink Business Plus powerpoint background is a nice abstract design with pink background and light effects that contains also plus images on the background.
This "Innovation" powerpoint template is a free background that you can download and use in your powerpoint presentations. This template with abstract color and background has blue ground and nice effects with curves. You can see a lot of white points and pluses on the ground.
