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OverviewLearn 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. Full Product DetailsAuthor: Paul GreenPublisher: Createspace Independent Publishing Platform Imprint: Createspace Independent Publishing Platform Dimensions: Width: 21.60cm , Height: 0.50cm , Length: 27.90cm Weight: 0.259kg ISBN: 9781978043497ISBN 10: 197804349 Pages: 102 Publication Date: 15 October 2017 Audience: General/trade , General Format: Paperback Publisher's Status: Active Availability: In stock  We have confirmation that this item is in stock with the supplier. It will be ordered in for you and dispatched immediately. Table of ContentsReviewsAuthor InformationTab Content 6Author Website:Countries AvailableAll regions |
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