Learn to do Math With Soroban a Japanese Abacus: Learn how to add, subtract, multiply, divide and find square roots with this easy to use instruction guide. Paperback – August 18, 2016

Hands down this is the best book I own on soroban. All operations are explained with easy to understand explanations and illustrations. Explanations for multiplication and division is very well written and I was able to make sense of the steps. Instead of labeling the rods as A, B, C, D, etc. book explains in detail why, where and which rod to choose to register answers. These explanation made so much sense to me. Illustrations make it so much more easy to follow the steps and learning has been fun and joyful. I am very glad to know how to add and subtract negative numbers. This is the most valuable addition to my collection of books on soroban. This books speaks to me. PERFECT! Well done SAI Speed Math Academy, thank you very much!

This book is incredible. My sons knowledge on mental math is improving rapidly!!!

This is an excellent book, which makes learning soroban pretty easy. My only quibble is that it does not tell you how much you should practice, and there is only 1 page at the very end which discusses "mental abacus". But lots of practice problems, and an intuitive design and good diagrams.I wish it would tell me how to train, what to train on, to become proficient at "mental abacus". But this book only has clear instruction on how to do the operations, not how much to train or how to get there.This book is MUCH better than the old Kojima book, which was quite confusing.

Great book. It was easy to understand. It covers addition and subtraction, multiplication and division, decimals, and commas.

Love the explanations and the fact that it teaches adding, subtracting, multiplication, and division. Wish it had a few more problems for each.

If I could have only one book on the soroban - this would be it. It covers everything - adding, subtracting, multiplying, dividing, squaring and negative numbers with detailed illustrated and written instructions that are easy to understand and follow. Plus there are hundreds of practice problems - with the answers in the back. This is by far, the best book on how to use the soroban I have seen. Thank you SAI Speed Math Academy.

Well graded with exhaustive exercises for self-instruction. Explanations are a bit long-winded, but, otherwise, a very good resource.

I liked very much the numerous and lengthy worksheets providing practice exercises that are absolutely essential to understand and work the Soroban abacus. But, except for basic addition and subtraction, the book's explanations were difficult to understand and almost impossible to follow. Even after resorting to Youtube and learning how to do negative subtraction, multiplication and division I still found it difficult to go back and figure out what procedures the book was teaching. Part of the problem seems to be that the writer does not appear to be a native English speaker. As I discovered from viewing numerous videos on Youtube there are several ways to do multiplication and division on the abacus. I would say that the book has chosen the most difficult. I do not recommend this book.