A free program for Android, by a1games.

Learning math is fun when it’s gamified. So, if you’re a parent in the market for a cool math app for your child, check out Math Practice Flash Card. It features the following game modes: Math Study, Math Exam, Math Game, and Math Tables. These game modes will hone your child’s basic arithmetic skills. Speaking of arithmetic, Math Practice Flash Card tackles addition, subtraction, multiplication, and division. 

Math Practice Flash Card contains levels of increasing difficulty. The harder levels will test your child’s problem-solving skills, determination, and patience. There’s a time limit, too, so be sure your little one is prepared to solve equations quickly.