What kinds of calculation can we do(20-01-2010)

Both basic and advanced math problems can be solved with an understanding of the Abacus, including addition, subtraction, multiplication and division, as well as square root, cube root and even bank interest and many more.

Abacus is the best to make calculation easy.Thank you Proview Abacus
Master Sayan Shaw(15-04-2010)


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