Three Rivers Press (CA)</br></br>Product Description</br></br>These simple math secrets and tricks will forever change how you look at the world of numbers.<br /><br /><em>Secrets of Mental Math</em> will have you thinking like a math genius in no time. Get ready to amaze your friends?and yourself?with incredible calculations you never thought you could master?? as renowned ??mathemagician?? Arthur Benjamin shares his techniques for lightning-quick calculations and