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The remaining contestants are sitting in chairs. Then I go to one of the sales websites, and see that I could buy a couple of working vintage HP calculators for the price of a basic soroban, and I’m all like, “Nah”. Many veteran and prolific abacus users in China, Japan, South Korea, and others who use the abacus daily, naturally tend to not use the abacus anymore but perform calculations by visualizing the abacus. Here is a video of a “slow” 1. I think a slide rule is more likely to give you a deep understanding of numbers, although of course it’s possible to use it by rote too. The abacus is still in use in Russia, too:

flash anzan

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The previous winner, Priyashi Somanifrom India, did too. After automation, you can start to mentally visualize the soroban and move the flxsh in your mind.

flash anzan

To see how to do addition, subtraction, multiplication and division: The most important link is this one: However, this is not too difficult and the rules can always be recalled when you know flaash way they are constructed.

I might have to find me an abacus. At first scanning the post I thought that “Flash Anzan” was the name of a person, who had broken some record. I was given a late relative’s Versalog slide rule – apparently the Cray of slide rules – and I can barely multiply on the thing. Flash Anzan was invented a few years ago by an abacus teacher, Yoji Miyamoto, who wanted to design a maths game that was only solvable by calculation with an imaginary abacus, a skill known as anzan.


Order by newest oldest recommendations. In this clip the two girls are adding up 30 digits in 20 seconds while simultaneously playing “shiritori”, a Japanese game flashh which you must say a word beginning with the last syllable of the previous word.

This makes me feel stupid. Abacus story, in which Feynman concludes that the abacus salesman can calculate quickly, but doesn’t have an intuitive sense of numbers.

When the contestant sees the first number he or she instantly visualizes the number on the imaginary abacus. Feynman’s is based on remembering multiplication tables, cube roots, and primes. The neat thing for me is that trained abacus work is faster than typing the numbers into a machine. And the high point of the championship is the category called “Flash Anzan” — which does not require an abacus at all.

Actually, it might have been European-language-speakers in general.

The speed is so fast I doubt you can even read one of the numbers. The standard abacus can be used to perform addition, subtraction, division, and multiplication; the abacus can also be used to extract square-roots and cubic roots.


The general idea with the abacus in Japan, though, is that it’s a great aid at concentration, is fun and produces an interest in numbers, as opposed to in the West where it’s azan normal for people to admit that they’re rubbish at maths. As a part of soroban instruction, intermediate anzab are asked to do calculation mentally by visualizing the soroban or any other abacus and working out the problem without trying to figure out the answer beforehand.


Things I would Google if I weren’t running late this morning: It certainly gives you a deep understanding of logarithms, given that this is how the basic functions work.

The biggest thing you need to learn is the automation process. The chinese short division method http: So if you want to be a physicist or mathematician, you’ll want to get friendly with the integers and know all their cubes and squares.

Mental abacus – Wikipedia

My abacus imagines digital, with multicolored digits. The challenge is to add them up. My imaginary friend uses an imaginary abacus. It’s an interesting relationship between user interface and input modalities.

flash anzan

Anzzan of world sports championships. One of these projects was learning to use the soroban. Of course, there is also the higher visuospatial intelligence of northeast Asians. Where does one begin? Oh this is awesome.