what is the use of abacus?
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In early days Abacus where used for calculating simple mathematical calculation such as addiction and substraction .
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Explanation:
Anatomy & Construction. The standard abacus can be used to perform addition, subtraction, division and multiplication; the abacus can also be used to extract square-roots and cubic roots. The beads are manipulated with either the index finger or the thumb of one hand.
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