Abacus Lesson - ADD and SUB -

Hirokuma.App

Contains adsIn-app purchases

About this app

An abacus is named "Soroban" in Japan. Do you know what an abacus is? The abacus is very simple calculator used in China, Japan, Korea and so on. Some people may say "Isn't it an unnecessary tool if you have a calculator such as a smartphone?". Answer would be "No".

The biggest difference between electric calculators and the abacus is whether you need to hold it in your hand when calculating. Because of its simplicity, you will be able to easily use the abacus in your mind.

Imagine that you can use calculations of about 3 digits in your life without physical tools.

This app will give you the skill of calculation.

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Ratings and reviews

Brilliant app. I want to thank the Japanese developer for all your hard work and commitment to this fascinating technology. The Japanese abacus is a tool that helps the development of the mind to a supreme degree. I have seen kids in japanese junior high schools doing things so astounding, making super fast calculations of huge numbers. It is almost unbelievable. The Japanese abacus, or Sokoban, is my favorite tool for brain training. But is much more than that. It is an art form. I love it.

That's not worth it . It's such a rubbish game I gave all the answers correctly but still this app is showing me that it's wrong . I do abacus practically I just installed this app so that I can practice more .PLEASE DO NOT UNISTALL IT .And waste your time. Better is to learn abacus practically .

A well thought-out and useful app. Great for learning or relearning basic maths Suggestions are to have the option of turning the sound off as it can disturb others when I use it on the train. Also needs a part of the app that is a pure abicus when the user comes to the end of the lessons. Last part is the adds. I would have preferred to spend a few dollars on this app and own my copy outright than experience the advertising.

What's new

Updated library