Ditch the flash cards and start downloading! We've found seven math apps that will make your kiddos awesome at arithmetic. Combining learning and entertainment — the best of both worlds — division is going digital, helping your kids (quickly) succeed. Classic games like tic-tac-toe have been given a timetable twist and math ninjas will help tackle numbers. Check out a few of our favorites guaranteed to entertain your lil ones for hours on end!