Just tilt your Kindle left and right like a steering wheel and forward and back to select answer boxes (avoiding the red fences) as you glide along the question course! The Arithmemouse Addition Subtraction Game is a great children's math app with exciting high definition 3d graphics that provides challenging game play for a wide variety of ages. Almost everyone would be challenged by its most difficult level. Basic tutorials are also provided. Math skills come before arcade skills; blasting asteroids and space junk is only provided for some entertainment, and is optional (no punishment for getting hit by debris and no reward for eliminating it). Practice again and again to improve speed and accuracy!