Inspired by the arcade hit "whack-a-mole" this version delivers the same heart pumping action but with an educational twist. In order to actually "hit" the mole you not only have to whack it with your finger but you must answer a math question. "Math-a-Mole Free" supports the four basic math operations: Addition, Subtraction, Multiplication, Division. The game is limited to arithmetic up to the value of three (such as 3 x 3). If you like the gameplay but want to remove the limitation consider purchasing one of the upgraded versions for a specific type of arithmetic such as "Math-a-Mole Addition" for US$0.99. Or "Math-a-Mole Ultimate" for US$2.99 which includes addition, subtraction, multiplication and division. It is buy 3 and get 1 for free!!