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Hungry 9
(lemmy.likes.cat)
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this post was submitted on 18 Oct 2024
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There's ~~people~~aliens who would add 9+7 instead of 10+6 or 8+8 in their heads?
I do, because 9 plus anything is just a 1 in front of the other digit minus 1.
Weirdly enough, I just thought about using the methods here for the first time in my life earlier today. Weird.
My brain did something similar, but maybe weirder.
7 + 3 + 6, rather than 9 + 1 + 6.
That's basically what I do
Yep, there are many ways that people (some of whom may or may not be of earthly origin) have developed to perform various degrees of math all in their heads.