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Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Imaginary Abacus - Instruction book: A mind math step-by-step guide to addition and subtraction using an imaginary Japanese abacus (Soroban).

Imaginary Abacus - Instruction book: A mind math step-by-step guide to addition and subtraction using an imaginary Japanese abacus (Soroban).

Paperback

General EducationGeneral MathematicsTest Prep

ISBN10: 197804349X
ISBN13: 9781978043497
Publisher: Createspace
Published: Oct 15 2017
Pages: 102
Weight: 0.57
Height: 0.21 Width: 8.50 Depth: 11.00
Language: English
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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General Education