Question

Short note on abacus it is actally for a presentation of 4 3 ppl

Answer 1

Abacus

Abacus is an instrument that is used to do calculations like addition,subtraction,division,subtraction

It also helps in concentration

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Answer 2

the Abacus also called a counting frame,is a calculating tool that was used in Europe,China, and Russia centuries before the adoption of the writing Hindu Arabic numeral system.the exact origin of the Abacus is still unknown today Abacus are often constructed has a bamboo frame with beads sliding on wires ,but originally they were beans or stones moved in Grooves in sand or on tables of earth stone on metal.

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