Description
A series of simple steps that anyone can use to add, divide, subtract, and multiply sums that seem impossibleโwith no pencil, paper, or calculator.Many people tend to avoid situations where they must reach for the calculator or, even worse, work things out in their head, but the system outlined here will change that. This wonderful and fun book will teach readers how to perform a range of mathematical tasks, from simple addition to complex equations, with ease, ensuring that the frustration numbers cause is banished forever. And, of course, it will nourish the showoff in everyone.
ISBN:9781843583851
