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Hirokazu Komatsu
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".
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Source : page publique de l’App Store Apple · éléments visibles publiquement uniquement
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.
In the app, we will explain simple and fast method of the multiplication using the abacus.
To learn multiplication, it is essential to be able to add with an abacus.
If you are new to addition and subtraction, we recommend that You first learn with the following app.
https://apps.apple.com/us/app/abacus-lesson-add-sub/id1526785916
This app will give you the skill of calculation of multiplication.
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Le dernier prix de téléchargement observé est de Free. Consultez le lien App Store officiel pour confirmer le prix actuel au moment du paiement.
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