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Lulu.com claimed This book will teach you step-by-step how to perform addition, subtraction, division, multiplication, square roots and cube roots on a Chinese abacus. It also explains the ancient ´extra bead´ method and the ´suspended bead´ method. Great for both children and adults. Clearly explained with text and pictures throughout every stage of your calculation. A preview of the book can be seen at http://www.lulu.com/content/1018833 Note: This is the compact book size version 6´x9´ of the larger 8.5´x11´ original (ISBN: 978-1-8479-9943-6). Ideal size for travelling.
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