Mental Math


Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks
Speed Mathematics Simplified (Dover Books on Mathematics)
The Trachtenberg Speed System of Basic Mathematics
How to Calculate Quickly: Full Course in Speed Arithmetic (Dover Books on Mathematics)
The Secrets of Mental Math
Think without Ink: An Adventure with Quantitative Problems
The Trachtenberg Speed System of Basic Mathematics: The revolutionary new method for high-speed multiplication, division, addition, subtraction, and square root
Speed Mathematics: Secrets Skills for Quick Calculation
Short-Cut Math
The Great Mental Calculators: The Psychology, Methods, and Lives of Calculating Prodigies Past and Present
Modern Approach to Speed Math Secret: Key to Master Speed Math
A Mind for Numbers: How to Excel at Math and Science (Even If You Flunked Algebra)
The Art of Mental Calculation: addition & subtraction
Secret Of Mental Math Arithmetic: 70 Secrets To Super Speed Calculation & Amazing Math Tricks: How to Do Math without a Calculator
The Magic of Math: Solving for X and Figuring Out Why