32 Simple Tricks For Quick Mental Calculations

This short book is a collection of simple and easily grasped tricks to speed up your mental arithmetic. It pays to master them as they will enable you to do calculations in your head without error, as with written calculations.

• • Author: Yakov Perelman
• • Publisher: Prodinnova
• • Publication Date: Jan 26, 2019
• • Number of Pages: 18 pages
• • Language: English
• • Binding: Paperback
• • ISBN-10: 291726098X
• • ISBN-13: 9782917260982