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Fucking math... (lemmy.dbzer0.com)
submitted 1 year ago by to c/science_memes@mander.xyz
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[–] 7 points 1 year ago (2 children)

Why did no one ever teach me this?? Did I miss this day in class? I feel so silly. This is really useful.

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  • [–] 7 points 1 year ago

    Most teachers will write it off as obvious. Taking a percentage of something is just multiplication and if you actually write it down with multiplication, it is, indeed, obvious:

    4*75/100=75*4/100

    And yes, it means you can just multiply 75 by 4 first and then divide by 100.

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  • [–] 7 points 1 year ago

    Yes and no, other day I was trying to figure out 17% of a number like 65, and I'm like "Oh it's just 65% of 17!" Which really wasn't helpful.

    It works with small numbers on one side tho.

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