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.

◆Twitter
　https://twitter.com/p4pLIabLM00qnqn

◆Instagram
　https://www.instagram.com/hirokuma.app/

Ratings and reviews

its great until you get to Lesson 3, then they hit you unskippable ads before you can continue going. completely ruins it.

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.

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