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The panzer has spoken (sh.itjust.works)
submitted 10 months ago by [email protected] to c/[email protected]
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[-] [email protected] 193 points 10 months ago

WTF why did no one mention this to me when I was struggling with math as a kid?

[-] [email protected] 125 points 10 months ago* (last edited 10 months ago)

They probably did, just not explicitly:

You could write (6*1/100)*50 = 6*(50*1/100)

It only uses the commutative property of multiplication and the fact that % is another way of writing 1/100.

Maybe also worth remembering that "x% of y" is just x/100*y

[-] [email protected] 56 points 10 months ago
[-] [email protected] 24 points 10 months ago

The word percent is exactly that per cent, which basically means parts of hundred. E.g. 10% are 10 of 100, or 60% are 60 of 100. You can also write this mathematically as 60/100 or 60÷100, which is 0.6.

Now in general: x% are x parts of 100 or x/100 or x÷100. If you want to calculate x% of y you just multiply it: y × x% = y × x ÷ 100.

[-] [email protected] 2 points 10 months ago

This is one of those "maths is magical" moments, I guess.

[-] [email protected] 1 points 10 months ago
[-] [email protected] 0 points 10 months ago
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this post was submitted on 09 Nov 2023
1365 points (98.2% liked)

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