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Percentages (mander.xyz)

submitted 3 days ago by [email protected] to c/[email protected]

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[–] [email protected] 2 points 2 days 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] 6 points 2 days ago* (last edited 2 days 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 2 days ago* (last edited 2 days 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.