What is an Abacus 

Definition:- An Abacus is an instrument, which is a collection of beads that slide on rods.

Abacus 

Image result for abacus image

Use of abacuses

1. Abacuses can be used to add, subtract, multiply, and many other operations.

2. Abacus can be used to calculate square root of whole numbers.

3. Abacuses are still used in marketplaces in some part of the world as Eastern Europe, China, Africa and Russia. 

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