



This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original...

Whether you need to calculate complex equations in your head or you just want to improve your math skills, this book is a valuable resource. In clear and concise language, it introduces a variety of methods and shortcuts for performing arithmetic operations quickly and accurately...


Whether you need to calculate complex equations in your head or you just want to improve your math skills, this book is a valuable resource. In clear and concise language, it introduces a variety of methods and shortcuts for performing arithmetic operations quickly and accurately...