Book of Donmon Teith

An experienced math teacher shares the 250 10-minute quizzes he developed that helped boost his students' mental math skills and their scores on standardized te

Learn how to easily do quick mental math calculations Speed Math for Kids is your guide to becoming a math genius--even if you have struggled with math in the p

Did you know that it's easier to add and subtract from left to right, rather than the other way round? And that you can be taught to square a three-digit number

This new, revised edition of the bestselling Speed Mathematics features new chapters on memorising numbers and general information, calculating statistics and c

These simple math secrets and tricks will forever change how you look at the world of numbers. Secrets of Mental Math will have you thinking like a math genius