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bàn tính ảo để đào tạo trong chương trình soroban tính toán tinh thần
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.
Có gì mới trong phiên bản mới nhất 1.1
Last updated on Nov 6, 2018
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abacus soroban
1.1 by AFHIM SALAH
Nov 6, 2018