For the last fifteen years, the emphasis in math teaching is that all methods to the right answer are correct. Emphasis is on sharing all the different methods. (Canada)

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[–] snooggums@piefed.world 2 points 1 week ago

That is what Common Core in the US was attempting to do, show several approaches including the one in the OP to help understand how match works instead of teaching the 'one true way' that was common prior.

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