Điều quan trọng đối với người mới bắt đầu
It is important for beginners.
It gave only basic ideas of Abacus and how to use.
It also included counting, addition and subtraction in very small numbers i.e. 1 to 20.
Last updated on Nov 28, 2021
Minor bug fixes and improvements. Install or update to the newest version to check it out!
Phiên bản mới nhất
1.4
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4.1 and up
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Abacus Basic Ideas
1.4 by Kerala Android Applications
Nov 28, 2021