What's New
Updated Library.
Ended support for devices below Android 7.0
About Abacus Lesson - ADD and SUB - Android 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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Download
This release of Abacus Lesson Android App available in 2 variants. Please select the variant to download. Please read our FAQ to find out which variant is suitable for your Android device based on Screen DPI and Processor Architecture.
All Versions
If you are looking to download other versions of Abacus Lesson Android App, We have 10 versions in our database. Please select one of them below to download.
