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Историческую версию abacus можно получить на Android
virtual abacus to train in soroban program of mental calculation
the application "abacus" is in the form of a Japanese abacus named "soroban".
In this exercise you will train yourself to:
-Read the beads represent on the abacus
- Compose on the abacus the number
- Train for the four operations (addition-subtraction-multiplication and division)
the purpose of the "abacus" application is to improve the imaginition of pearls and the development of mental calculation skills.
Что нового в последней версии 1.1
Last updated on 06/11/2018
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abacus soroban
1.1 by AFHIM SALAH
06/11/2018