His techniques are explained in his book Secrets of. Mental Math: The Mathemagician's Guide to Lightning Calculation and. Amazing Math Tricks. Prolific math.
Benjamin, Arthur. Secrets of mental math : the mathemagician's guide to lightning calculation and amazing math tricks / Arthur Benjamin and Michael Shermer.
Editorial Reviews. Review. “A great introduction to the wonder of numbers, from two superb Read with Our Free App; Library Binding 3 Used from 7 New from Also available as an eBook. Read more Read less. Mental Math Secrets - Rapidly Calculate Restaurant Tips (Math Trick)