![]() Note: If you want to learn more about Japanese abacus, you might want to to read How To Use A Japanese Abacus: A step-by-step guide… (affiliate link).Ĭredits: The images in this post were taken from the Mr.Giorgio Arcidiacono Online Virtual Abacus. In the next post, we are going to learn how to add and subtract using the Japanese abacus. Next, two 1-unit counters were moved up, so their value is 2.Įxample 4: The ones unit represents 6, the tens unit represent 70, and the hundreds unit represent 500, so the value represented by the abacus is 576.Įxample 5-6: Below represent 1 21. One 1-unit counter in the tens place was moved up, so its value is 10. The starting position of the Japanese abacus is shown above, where all 5-unit counters are stacked at the top, and all 1-unit counters are stacked at the bottom.Įxample 1: The abacus represents 2 because two 1-unit counters were moved to the top of the bottom deck in the ones place.Įxample 2: The abacus represents 6 because one 1-unit counter was moved to the top and one 5-unit counter was moved down the top deck.Įxample 3: The abacus in this diagram represents 12. In this section, we are going to learn how to represent numbers using the Japanese abacus or soroban. How to Represent Numbers in a Japanese Abacus ![]() depending on the place value, and moving a 5-unit down increases the value of the number by 0.5, 5, 50, 500 and so on, depending on the place value. Moving the 1-unit up adds 1, 10, 100, etc.
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