The format of Mental Arithmetic differs from that of traditional mental arithmetic materials in that pupils read the questions themselves, use rough paper for w

The First Mental Arithmetic Answers book provides the correct answers to all the questions contained in the corresponding workbook. Answers to the Check-up test

The format of Mental Arithmetic differs from that of traditional mental arithmetic materials in that pupils read the questions themselves, use rough paper for w

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

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