Prime Numbers

I have been learning to do prime numbers. I have to put my cursor over the balloon and answer if that balloon is a prime number or not. If it is a prime number I press yes, but if it is not I press no.I have to pop balloons so that if a blue colour needs one more to make the squares white it will go down and the three balloons will pop. This game is really easy and next time I want to learn squares and square roots.