The Trachtenberg Speed System of Basic Mathematics

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

Short-Cut Math

Quicker Approach to Quantitative Aptitude: Personal Notes of Sizil Krishna

Advanced Abacus: Theory and Practice

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

What Is Mathematics, Really?

Basic Math & Pre-Algebra For Dummies: Edition 2

Calculus II For Dummies: Edition 3

Calculus Made Easy: Being a Very-Simplest Introduction to Those Beautiful Methods of Reckoning Which are Generally Called by the Terrifying Names of the Differential Calculus and the Integral Calculus

Problems and Solutions for Integer and Combinatorial Optimization: Building Skills in Discrete Optimization

Math Practice, Grade 3

Finding Zero: A Mathematician's Odyssey to Uncover the Origins of Numbers