What is Abacus Mental Arithmetic?

•The child moves the Sliders in the Physical Abacus to do arithmetic sums

•After 3 level, the Child imagines the Abacus in its mind and can do Abacus sums without use of the physical Abacus.

•The child while doing arithmetic calculations moves the sliders in the imaginary Abacus and the resultant bright colour image is converted as number and the quick answer comes within few seconds.

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