| Author | : Paul Green |
| File Size | : 43,7 Mb |
| Publisher | : Createspace Independent Publishing Platform |
| Language | : English |
| Release Date | : 15 October 2017 |
| ISBN | : 197804349X |
| Pages | : 100 pages |
Imaginary Abacus Instruction Book by Paul Green Book PDF Summary
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.
