Game Math Defender Pro online

A collection of rare gems endangered. Birds have decided that it is great food and all are going to peck up the remainder. Only the knowledge of arithmetic will protect you from robbery. Bird-thieves written number, and a cannon - a little problem. If the result of example coincide with the inscription on the feathered invaders, shell will act and throw the enemy. The faster you solve, the more gems will remain on the shelves. Shooting and gun control - mouse.