Mental calculation and flash anzan learning method flow

How to calculate the secrets of mental arithmetic,
We would like to inform you about the method of mental arithmetic of ISHIDO-SHIKI, which has produced many mental arithmetic world champions.
The content can be read in 3 minutes.
 

I'm the author of this article and I'm a qualified abacus teacher, answering questions from around the world online abacus and various questions from online-soroban.com students.

Table of contents

1. What is mental calculation?
2. What is flash anzan (mental arithmetic)?

1. What is mental calculation?

Mental arithmetic is a method of doing calculations in your head.
This site allows you to train your mental arithmetic skills.
Mental arithmetic ability is useful in various parts of life, other than calculation.

1-1.Mental calculation

I think there are various ways of mental arithmetic, but the method of mental arithmetic we recommend is
It is a method using an abacus.
According to an interview survey at the 2014 Mental Calculation World Cup, more than half of the participants were learning abacus.

1-2.Ability required for mental calculation

Before you can do the mental calculation, you need to learn an abacus.
This site has a curriculum that allows you to learn abacus from beginners.

1-3. Where to study to be able to do mental calculation

If you want to be good at mental arithmetic, first learn abacus.
Study the basics of the abacus and start studying mental arithmetic.
You can learn abacus and mental arithmetic while watching anime from the basics on this site.

2. What is flash anzan (mental arithmetic)?

In this chapter, I will explain what flash mental arithmetic is, and how to acquire that ability.
I'm writing together where you can learn.

2-1.What is Flash anzan (mental arithmetic)?

Flash mental arithmetic is a competition in which the numbers that are displayed on the screen instantly are calculated only in your head.
The number of digits is also from 1 digit to 3 digits.
The difficulty level changes depending on the speed. Practice with what suits your level and aim for the top.

2-2.How does a person doing flash anzan (mental arithmetic calculate)?

Flash mental arithmetic is very popular in Japan.
The Japanese also hold world records.
It is the speed of the flash mental arithmetic world record, but the record is 15 times of 3 digits addition in 1.6 seconds. The numbers change every 0.1 seconds, so it's fast and difficult to see the numbers, but you can use the ability of the abacus.

2-3.To be able to perform flash anzan (mental arithmetic)

In order to be able to use flash mental arithmetic, you must first be able to mentally calculate with an abacus.
As for the flow, first learn abacus, and then learn mental arithmetic when the basics are established.
After that, flash mental arithmetic becomes possible, so even if you try to do it quickly, there is no basis, so I think it is difficult to calculate the digits so fast.

2-4.A site where you can learn flash anzan (mental arithmetic)

Online abacus dot com allows beginners to learn abacus and mental arithmetic while watching anime
After learning abacus and mental arithmetic, you can also experience flash mental arithmetic here.
If you try it after learning mental arithmetic, you will be amazed at your speed.

2-5.Records with countries where flash anzan (mental arithmetic) is active

Flash mental arithmetic is very popular in Japan.
The Japanese also hold world records.
It is the speed of the flash mental arithmetic world record, but the record is 15 times of 3 digits addition in 1.6 seconds. The numbers change every 0.1 seconds, so it's fast and difficult to see the numbers, but you can use the ability of the abacus.

2-6.Compete with people from all over the world using flash anzan (mental arithmetic)

You can experience flash mental arithmetic at online abacus dot com.
You can try flash mental arithmetic for free on this site.
There are 5 questions in total, but since there is a ranking board, you can compare your ranking with everyone in the world.

Overall  
In order to speed up flash anzan (mental arithmetic), first you need to be able to make an abacus,
And by learning mental arithmetic, you will be able to do flash mental arithmetic.
This site is an innovative site where even a beginner can learn the abacus with animation.