Calculator Square Root on Facebook

Calculator Square Root is already on facebook, and hopes you share it with your friends so that this utility can be used by more people. Our first goal is to get 50 friends on Facebook to continue including other utilities that you recommend us.
Meanwhile we hope your suggestions of other tools that can be used in the education of our children, any similar utility for divisions?.
Also, you can leave comments for improvement of this utility, opinions and doubts about this tool. Did it run fast or the site was very slow?
We wait your opinions, thanks.

Square Root Like