As perfect as the iPad may seem, occasional glitches are inevitable. There is however, a “universal troubleshooter”, per se.
First, delete all your apps from the multitasking queue by double tapping the home button and deleting everything in the bar that appears (don’t worry, this doesn’t delete any actual apps). Then turn off your iPad by holding the lock button and sliding to unlock. Finally, turn your iPad back on.
This simple solution fixes many simple mishaps you may encounter while you use your iPad.
Have fun with your iPad!