32 simple tricks for quick mental calculations

About The Book

This short book is a collection of simple and easily grasped tricks to speed up your mental arithmetic. If you want to master them you should realize that to be used fully they need to be approached conscientiously not mechanically. But it pays to master them as they will enable you to do calculations in your head without error as with written calculations.

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Details

ISBN 13
:
9782917260982
Publication Date
:
26-01-2019
Pages
:
18
Weight
:
41 grams
Dimensions
:
152x229x1.57 mm
Publisher

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