• jinarched@lemm.ee
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    2 days ago

    If you know those five intuitively, adding and subtracting become automatic even with adhd.

    1 + 9 = 10

    2 + 8 = 10

    3 + 7 = 10

    4 + 6 = 10

    5 + 5 = 10

  • Akasazh@lemmy.world
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    2 days ago

    The meme has nothing to to with ADHD, however your explication of how it happened does.

  • Elise@beehaw.org
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    2 days ago

    You can solve this one with redneck math. You simply flip the numbers in 7+6 upside down, which looks like 4+9, which is clearly 13.

  • vxx@lemmy.world
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    3 days ago

    That’s how our math teacher taught us to take shortcuts in elementary school.

  • hornedfiend@sopuli.xyz
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    3 days ago

    I calculate percentage like this. If 100% is the value, then I know what 10% is, then1%, so I do increments of both until I get to the correct value.

    It may sound stupid,but it does help me get a % fast enough.

    • MrShankles@reddthat.com
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      3 days ago

      Thank you! That’s pretty neat. I tried 27% of 65

      I added two 10% increments (6.5+6.5)… but instead of adding 0.65 (1%) seven more times, I added a 5% increment (6.5/2 = 3.25) and then 2 increments of 1%

      So 6.5+6.5+3.25+0.65+0.65 = 17.55

      I still had to use a calculator to add those weird numbers (and also check my work), but it does seem really practical for easier numbers. I usually need percentages for pricing (i.e. discounts/tipping), and the percentages are normally in increments of 5%, so that’s pretty useful for figuring out a 15% or 75% of something real quick… or at least get me really close (when talking about something like $X.99)

      Regardless, I appreciate the head trick!

      Edit: I guess I could’ve done 30% and then subtracted 1% twice; but it’s the same issue (of adding weird numbers) with the same outcome anyway. So thanks again!

      • griefreeze@lemmy.world
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        2 days ago

        Another neat trick: X% of Y is equal to Y% of X. That is, in your example, 27% of 65 == 65% of 27. So check and see which combination might provide fewer steps/messy numbers.

        13.5 (50% of 27) + 2.7 (10% of 27) + 1.35 (5% of 27) = 17.55

  • Trashcan@lemmy.world
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    3 days ago

    I’m sorry, but this is a silly statement. This is by no means an ADHD thing. It’s a pattern understanding or logic

    I’m trying to teach my kid this. Not to use this specific method for addition, but recognize and understand patterns in math.

    • ThatWeirdGuy1001@lemmy.world
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      3 days ago

      What most people misunderstand about mental illness diagnoses is that most people have most of these symptoms. It’s only when these symptoms overlap and disrupt your ability to function as an individual that they require a diagnosis and medication/therapy.