Encyclopedia of Distances: Edition 2

The Trachtenberg Speed System of Basic Mathematics

Figurate Numbers

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

Dictionary of Distances

Short-Cut Math

Quicker Approach to Quantitative Aptitude: Personal Notes of Sizil Krishna

Generalizations Of Finite Metrics And Cuts

A Beginner's Guide to Constructing the Universe: The Mathematical Archetypes of Nature, Art, and Science

An Introductory Course in Elementary Number Theory

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

Basic Math & Pre-Algebra For Dummies: Edition 2

Notebooks of Srinivasa Ramanujan: Volume II, Volume 2

Math Practice, Grade 3

Head First Algebra: A Learner's Guide to Algebra I

How Numbers Work: Discover the strange and beautiful world of mathematics

A History of Pi

Complex Numbers from A to ... Z: Edition 2