Each of us is capable of multiplying, dividing, raising to a power and performing other operations on large numbers in our heads and at high speed. To do this, you don’t need to solve tens of thousands of examples and study for years - just use the simple techniques described in this book. They are accessible to people of all ages and all math abilities. This book will teach you how to do math faster than on a calculator, memorize large numbers, and have fun with math.