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Cake day: July 3rd, 2023

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  • jjjalljs@ttrpg.networktoMath Memes@lemmy.blahaj.zone<3
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    2 hours ago

    You’re being weirdly aggressive, but okay.

    Most people know the symbols for addition subtraction multiplication and division. Far fewer people know the established order of operations. That’s what powers those “only 3% of people solve this problem correctly!” math memes.

    But okay. Communicate badly (ie: by failing to acknowledge your audience’s context) and be smug if you want.


  • jjjalljs@ttrpg.networktoMath Memes@lemmy.blahaj.zone<3
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    4 hours ago

    Naively, not natively. Someone who wasn’t a good math student, or just doesn’t remember, might read it left to right and come to the wrong conclusion. The rules for order-of-operations are, so far as I know, arbitrary, and different people coming at it without instruction (ie: naively) could arrive at different conclusions. Knowing that you’re supposed to do division first isn’t obvious.

    You could read 25 - 5 ÷ 5 as “25 - 5 is 20. 20 divided by 5 is 4” or you could read it (correct, per the standard rules) as “25 minus… hold on… 5 divided by 5 is one. Now 25 subtract that from the 25 sitting over there, and get 24.” This isn’t the same kind of error as, like, “5 divided by 5 is 0”





  • jjjalljs@ttrpg.networktoMath Memes@lemmy.blahaj.zone<3
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    4 hours ago

    25 - 5 ÷ 5 when read naively left to right looks like it would be “25 - 5 = 20. Then take that and divide by 5, for an answer of 4”. It would be clearer to write it as (25 - 5) ÷ 5 or 25 - (5 ÷ 5) depending on what’s intended.

    You see those kind of “gotcha!” posts online sometimes, where someone posts a problem that tempts you into doing order of operations wrong.

    Someone who sees how to do it correctly immediately and thinks everyone knows that is invited to view https://xkcd.com/2501/ as well.




  • This probably won’t help with the first point but you can hit Ctrl+d I think, or click the star, and it’ll just bookmark it with a default name (page title) and location, I think. I’ve definitely bookmarked things by accident somehow.

    I don’t believe I have ADHD so I can’t really relate to it. My original post wasn’t meant to be like a condemnation - weird isn’t always bad. Just different.

    It’s mildly interesting that you wouldn’t get anything done, but I feel like if I had to work like you I wouldn’t get anything done. Trying to deal with all those tabs would be a big distraction to me. Funny how different folks can be.