Mental ‘Abacus’ Calculation Technique

Math Online Tom Circle

Amazing calculation technique of Indian kids:

It is the advanced level of abacus calculator, where the physical abacus is replaced by a virtual abacus in the mind — see the kids need to move their fingers in the air, as if they touch a real abacus. This is different from the mental calculation sans a real electronic calculator, in which case no fingers playing the pressing buttons of an electronic calculator.

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