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Indian Girls Use The Mental Abacus

submitted by nock

9 years 7 months 2 weeks ago

This seems way more useful than the finger-counting method I was taught.

4 Comments

*promote

Promoting this video and sending it back into the queue for one more try; last queued Thursday, July 30th, 2015 9:03pm PDT - promote requested by eric3579.

AeroMechanical says...

Two's compliment binary on their fingers? Nah, but I guess you could get good at that too. I guess you could go trinary with a semi-flexed finger, but I dunno how to convert the flip the bits and add one part to that. Also, I need a piece of paper even in binary.

ant

My head hurts.

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