Mathemagics

Description for MATHEMAGICS: HOW TO LOOK LIKE A GENIUS WITHOUT REALLY TRYING by Arthru Benjamin, Ph.D., and Michael Brant Shermer, Ph.D.:

Using proven techniques, MATHEMAGICS presents the secrets of lightning calculation. It shows how to add, subtract, multiply, and divide faster than is possible with a calculator or pencil and paper and helps readers conquer their nervousness about math.