Mathematics, 24.08.2019 02:30, marika35

Explain how an abacus works doing addition and subtraction arithmetic.
cylinders left to right, “100” then “20” then “5” then “1”. the “100” has a quantity of 5 tokens. the “20” has a quantity of 4 tokens. the “5” has a quantity of 3 tokens. the “1” has a quantity of 4 tokens.

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Explain how an abacus works doing addition and subtraction arithmetic.
cylinders left to right...