There are other tasks that your four-or-five fingers can do on the iPad, as well. These do not work on the iPhone (that screen is too small), but on the iPad, these gestures are great.
Until now, you probably viewed your “running apps” by clicking the Home Button twice, and having the line-up appear at the bottom of the screen. No more! Save that Home Button the effort, and just use your fingers.
Here is how you do it: Place four (or five) fingers on the screen. Now > push them UP. Poof! You have just exposed the running icons at the bottom of the screen.
Gesture number 2 is a simple reverse of number 1. To return to the regular screen, and hide those running icons, just place your four (or five) fingers on the screen, and push DOWN. All gone.