Brilliant mental math short cuts that will amaze everyone!

To anyone who's ever wanted the answer to the question. If You're So Smart. Why Can't You Do Math In Your Head? Discover the amazing techniques from Ancient India that will have you figuring in your head, faster than most adults can with a calculator. Brilliant, fantastic - I have always been looking for a book like this that shows how interesting and easy math can really be. - Tony Tharpe, commer...