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

Classical Summability Theory

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

Sequence Spaces and Summability over Valued Fields

Calculus For Dummies: Edition 2

Short-Cut Math

An Introductory Course in Summability Theory

Quicker Approach to Quantitative Aptitude: Personal Notes of Sizil Krishna

Concise Introduction to Basic Real Analysis

An Introductory Course in Elementary Number Theory

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

The Trachtenberg Speed System of Basic Mathematics

Basic Math & Pre-Algebra For Dummies: Edition 2

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

Ramanujan's Lost Notebook: Part I, Part 1

Nonnegative Matrices, Positive Operators, And Applications

Notebooks of Srinivasa Ramanujan: Volume II, Volume 2

Math Practice, Grade 3

Number Theory: Structures, Examples, and Problems