Hypercalculia

Hypercalculia is when somebody is really good at doing math calculations in their head. Just like some people are really good at sports or playing music, some people are really good at doing math in their heads. People with hypercalculia can do calculations like adding, subtracting, multiplying and dividing numbers quickly and easily in their head, without needing a calculator or even a piece of paper. In some cases, they can do calculations quickly that some calculators can't do!