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