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Imaginary Abacus - Instruction book: A mind math step-by-step guide to addition and subtraction usin

Imaginary Abacus - Instruction book: A mind math step-by-step guide to addition and subtraction usin

by Green, Paul
No customer reviews yet ISBN 9781978043497 CreateSpace Independent Publishing Platform

Learn to add and subtract in your head by imagining an abacus to calculate the result. Example: Learn to calculate 415-350+233-155+44 quickly, just by imagining an abacus.This book will teach you the skills required to firstly use the actual abacus effectively, then how to use an imaginary abacus (also known as a mental abacus). To follow this book you will need: 1) A Japanese abacus (with at least 13 columns). 2) The accompanying workbook 'Imaginary Abacus - Workbook' (sold separately). This useful and impressive skill would be an asset for anyone.

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BrandCreateSpace Independent Publishing Platform
Pub dateOct 15, 2017
ISBN-10197804349X
ISBN-139781978043497
LanguageEnglish
Dimensions11 × 0.23 × 8.5 in
Weight1 lb
Last updated 2025-11-22 05:34
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