Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks

Short-Cut Math (Dover Books on Mathematics)

The Magic of Math: Solving for x and Figuring Out Why

Mental Math: Tricks To Become A Human Calculator (For Speed Math, Math Tricks, Vedic Math Enthusiasts, GMAT, GRE, SAT Students & Case Interview Study)

How to Calculate Quickly: Full Course in Speed Arithmetic (Dover Books on Mathematics)

Arithmetricks: 50 Easy Ways to Add, Subtract, Multiply, and Divide Without a Calculator

Be a Human Calculator (Mere Observation - No Magic): (All Calculation tricks at a single place for students (10-18) and the aspirants of GMAT, GRE, SAT, Vedic Math, Speed Math and Mental Math )

Math Magic: Human Calculator Shows How to Master Eve

Vedic Mathematics Made Easy