• MudMan@fedia.io
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    17 days ago

    Is that a weird method of doing math?

    I mean, if you give me something borderline nontrivial like, say 72 times 13, I will definitely do some similar stuff. “Well it’s more than 700 for sure, but it looks like less than a thousand. Three times seven is 21, so two hundred and ten, so it’s probably in the 900s. Two times 13 is 26, so if you add that to the 910 it’s probably 936, but I should check that in a calculator.”

    Do you guys not do that? Is that a me thing?

    • reev@sh.itjust.works
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      17 days ago

      I think what’s wild about it is that it really is surprisingly similar to how we actually think. It’s very different from how a computer (calculator) would calculate it.

      So it’s not a strange method for humans but that’s what makes it so fascinating, no?

      • MudMan@fedia.io
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        17 days ago

        That’s what’s fascinating about how it does language in general.

        The article is interesting in both the ways in which things are similar and the ways they’re different. The rough approximation thing isn’t that weird, but obviously any human would have self-awareness of how they did it and not accidentally lie about the method, especially when both methods yield the same result. It’s a weirdly effective, if accidental example of human-like reasoning versus human-like intelligence.

        And, incidentally, of why AGI and/or ASI are probably much further away than the shills keep claiming.

    • Gormadt@lemmy.blahaj.zone
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      17 days ago

      How I’d do it is basically

      72 * (10+3)

      (72 * 10) + (72 * 3)

      (720) + (3*(70+2))

      (720) + (210+6)

      (720) + (216)

      936

      Basically I break the numbers apart into easier chunks and then add them together.

      • Manticore@lemmy.nz
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        16 days ago

        This is what I do, except I would add 700 and 236 at the end.

        Well except I would probably add 700 and 116 or something, because my working memory fucking sucks and my brain drops digits very easily when there’s more than 1

    • GamingChairModel@lemmy.world
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      17 days ago

      This is pretty normal, in my opinion. Every time people complain about common core arithmetic there are dozens of us who come out of the woodwork to argue that the concepts being taught are important for deeper understanding of math, beyond just rote memorization of pencil and paper algorithms.

        • futatorius@lemm.ee
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          17 days ago

          Memory can improve with training, and it’s useful in a large number of contexts. My major beef with rote memorization in schools is that it’s usually made to be excruciatingly boring. I’d say that’s the bigger problem.