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

it's useful. I really appreciate the app. It's really fabulous. I think it is excellent for all students. they can try this. Thanks to Abucus Lesson. I can do any math with this app.

It helps build mental strength when it comes to math. I cant focus when it comes to doing fast mental math but this helps alot

Very enjoyable while learning. Highly recommended.

What’s new

Updated Library