How to do math in your head

In this video series, watch as math wizard Sean Salazar teaches you how to do math in your head. Get easy tricks using multiples of five and nine. Learn different approaches to squaring and dividing with bigger numbers. You don't need to get left as a remainder in the sum of great mathematicians, with these easy step by step online tutorials, you can take your math skills to the next power and take your limit to infinity.