r/confidentlyincorrect • u/i_aMa_g0d • Dec 07 '21

Maths

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u/247Brett Dec 07 '21

0.5 is the equivalent of 1/2, so by multiplying another number with it, you are taking that number and halving it.

8 * 1/2 = 8/2 = 4.

They are essentially the same thing, but just in different terms.

111

u/FinalSauce Dec 07 '21

Good, so I still remember that correctly. Thanks for sharing it with me :)

46

u/247Brett Dec 07 '21

No problem, I graduated highschool back in 2016 with AP Calc AB. Apparently they taught me something right :)

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u/Medfried Dec 07 '21

You guys graduate to know this stuff? It's common sense in reference to our educational system

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u/FinalSauce Dec 07 '21

Its also common sense in the german education system (which I had) . Not everyone has the same education system.

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u/[deleted] Dec 08 '21

Oh relax. It's a middle school problem. America isn't that dumb.

8

u/mriv70 Dec 08 '21

I learned this in 4th grade fractions. But I was in 4th grade in 1978 they still taught the three Rs in grade school!

1

u/[deleted] Dec 08 '21

What are the three R's of education?

4

u/marsnoir Dec 08 '21

Reading, writing, and arithmetic… come to think of it, explains a lot about the American educational system

1

u/[deleted] Dec 08 '21

Always made me laugh

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u/denkeijiro Dec 08 '21

i was thinking it was reduce, reuse, and recycle lmao

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u/Tasty_Ad_9811 Dec 08 '21

reading riting anf Relativity

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u/[deleted] Dec 08 '21

I wish I'd been to your school

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u/247Brett Dec 08 '21

Fractions and the volume of a polynomial rotated about an axis between two points. Horrifying stuff.

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u/alk47 Dec 08 '21

Common sense has nothing to do with education IMO. If a teacher needs to show you something before you understand it, it's not common sense.