Question

what is a abacus_____ ,​

Answer 1

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ABACUS :

➮ An abacus is like a manual calculator with sliding beads to represent numbers. It has rows or columns of beads that represent the digits of your number.

History of ABACUS :

➮ The abacus, also called a counting frame, is a calculating tool that was in use in the ancient Near East, Europe, China, and Russia, centuries before the adoption of the written Arabic numeral system. The exact origin of the abacus is still unknown.

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