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Imaginary Abacus - Workbook : A Mind Math Step-By-step Guide to Addition and Subtraction Using an Imaginary Japanese Abacus (Soroban). by Paul Green (2017, Trade Paperback)

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Learn to add and subtract in your head by imagining an abacus to calculate the result. This workbook has 1882 problems with answers. Example: Learn to calculate 415-350+233-155+44 quickly, just by imagining an abacus. To follow this course you will also need: 1) A Japanese abacus (with at least 13 columns). 2)The accompanying Instruction book 'Imaginary Abacus - Instruction book' (sold separately). Clearly written with graphics. Answers to all work is included. Learning to use an abacus is both enjoyable and helps to improve concentration and memory power. Clearly written with graphics. Answers to all work is included. Learning to use an abacus is both enjoyable and helps to improve concentration and memory power. see book review here: https: //

About this product

Product Identifiers

PublisherCreateSpace

ISBN-101542357225

ISBN-139781542357227

eBay Product ID (ePID)234019101

Product Key Features

Number of Pages124 Pages

LanguageEnglish

Publication NameImaginary Abacus - Workbook : A Mind Math Step-By-step Guide to Addition and Subtraction Using an Imaginary Japanese Abacus (Soroban).

Publication Year2017

SubjectCounting & Numeration

TypeTextbook

AuthorPaul Green

Subject AreaMathematics

FormatTrade Paperback