Science Memes

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Percentages (mander.xyz)

submitted 1 day ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 20 hours ago (2 children)

The different ways in which numbers slide up, down, sideways, diagonally.

Is the example in the post part of the fifth type of arithmetic?

Addition +
Subtraction -
Multiplication x
Division /
Modulo %

The first time I learned about modulo as its' own branch of arithmetic was long out of school already, I had only hazily heard of it, on a PBS Nova documentary in the 1990s about Fermat's famous theorem and when it was proven after centuries of failed tries.

[–] [email protected] 7 points 19 hours ago* (last edited 19 hours ago)

No it's not modulo, it's how to talk about increasing a number by a percentage of the number.

[–] [email protected] 6 points 20 hours ago* (last edited 20 hours ago)

Yeah we just learned "by" was a standard term for multiplication. So increased by 80% was just 1.8 times whatever you started with. "Divide by" meaning multiply inversely

Language translating to artithmetic. I'm sure it doesn't always line up, as we change language quite often.