Arithmetic

Reading, Writing and Arithmetic

Mental Math

Mentally Calculate It

As Easy As Pi

The Eleven-Plus Book

The O Level Book

New Concept Mathematics

Mathmatters

Elements of arithmetic

Junior Math Olympiad

Mental Math: How to Solve Problems Instantly Without a Calculator (The Little-known Secrets to Unlocking the Inner Human Calculator of Your Child)

Mental Math: A Quick and Easy Guide to Mental Math and Faster Calculation (Tricks and Practical Strategies to Make Calculations Faster, Enhance Your Math Skills and Solve Everyday Math Problems Easily)