Abacus Lesson - ADD and SUB -

Contains adsIn-app purchases
4.9
4.75K reviews
100K+
Downloads
Content rating
Everyone
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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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Updated on
Jul 31, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, Web browsing and 2 others
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.9
4.38K reviews
Q Q M A Formula
June 8, 2024
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.
23 people found this review helpful
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Kalyani Biswas Talukder
October 4, 2024
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 .
1 person found this review helpful
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ediga gowthami
November 13, 2024
I recommend this app to everyone, it is so simple and easy to learn, and we can practice as many times as we want. it helps kids to practice more. I really loved it ...thank you for the simple yet effective app
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