How to Calculate Using Japanese Abacus Part 2

October last year, I have introduced how to represent numbers using the Japanese abacus. In this post, I am going to teach you how to add and subtract using it. If you are not familiar on how to represent numbers in abacus, please read the first part of this series by clicking the link above. […]
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How to Calculate Using Japanese Abacus Part 1

In Japanese language, the abacus is called soroban. In this tutorial, we are going to learn how to use the soroban. In Japan, students learn to use abacus formally in the third grade. Believe it or not, in these modern time, some tellers in Japan still use abacus. And when they calculate, they are almost as fast […]
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A Short Tutorial on How to Use An Abacus

Before computers, there were abaci (plural of abacus). They were used as a calculation tool for hundreds of years. They were popular to the Greeks, Romans, Chinese, Japanese and Koreans. However, history tells us that there were way earlier versions of the modern abaci we know. According to Wikipedia, they existed in Sumeria as early […]
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