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Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks Suclass Code_1DS Or are both girls pushingThese simple math secrets and tricks will forever change how you look at the world of numbers. "Secrets of Mental Math" 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 amazing number tricks. This book will teach you to do math in your