The new Apple iOS 7 is here for your iPad Mini. Closing running apps prevents them from taking up precious memory, resources and battery. Simply quitting an app by pressing the home button doesn't work; the application is still running. Watch the video below to see how to close them completely.
To reiterate, press the Home button two times, then slide to the desired application, and slide it away by pulling it up. Easy and much faster than what it used to be in iOS 6.