how to multiply by 6,7 or 8 on your fingers explained with PROOF

Crazy-Logic

algebra eight fingers maths multiplication multiplications proof seven six

description

A trick to multiply by 6, 7 or 8 on your fingers explained with algebraic PROOF.

This makes it look a bit less impressive once you know the proof. ... https://www.youtube.com/watch?v=7e5OVDOGhoQ

created

2023-03-19

staked

0.0 LBC

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