If you move it around it makes more sense.
.25 = 0.5*0.5
If you take half of something only half of the time you take a quarter of something.
I see it more clear with this: 0.25 * 2 = 0.5
Dividing by 0.5 is like multiplying by 2.
I get why computers suck at decimals and division now.
So?
- 250 marbles / 500 kids = 0.5 marble per kid
- 25 marbles / 50 kids = 0.5 marble per kid
- 2.5 marbles / 5 kids = 0.5 marble per kid
- 0.25 marbles / 0.5 kids = 0.5 marble per kid, but there’s only one half a kid with a quarter of a marble in this example.
Not weird or disturbing at all
In case people would like it demonstrated,
0.25/0.5
= 1/4 ÷ 1/2
= 2/4 ÷ 2/2
= 1/2 ÷ 1
A÷1 = A, therefore 0.25/0.5 = 0.5
Alternatively, (a/b)/(c/d) = (a×d)/(b×c)
1/4 ÷ 1/2 = 1×2 ÷ 4×1 = 2/4 = 1/2
And before any pedants crawl out of the woodwork, there are a load of implied brackets, at the spaces.
This is why I don’t like decimal notation lol
(1/4)/(1/2)=1/2makes it way clearer what is going on.I am in the completely opposite camp of you, I cannot, for the life of me comprehend the equation in this form.
Come on it’s not even middle school maths.
(1/4) / (1/2) = (1/4) X (2/1) = (1/4) X 2 = 2/4 = 1/2 = 0.5
it has nothing to do with the equation itself, but the way that it looks. I understand the basics of the mathematics, but looking at it in this form does not work for me.
What’s not to understand? One divided by four divided by one divided by two equals one divided by two. Simple.
I understand the math, that isn’t the problem. It’s how it looks. I have a struggle parsing it.
Stupid Lemmy making me do maffs on a sunday >:(
0.5 = 1/2, 0.25 = 1/4
0.25 / 0.5 = (1/4) / (1/2) = 1/4 * 2/1 = 2/4 = 1/2 = 0.5
Everything I see memes like this I think:
“Do other people just not get basic math?”
A quarter of a half is a half
Edit: its a joke comment guys
People don’t understand sarcasm lol
‘A quarter of a half’ would be 0.5x0.25 (0.5x1/4 = 0.5/4) and it’s not a half. The equation shown is ‘a quarter divided by a half’.
More accurately a quarter of a whole is a half of a half of a whole
Morer accurately, a quarter of a whole is half of a whole half which is half of a whole
You can’t even buy boots with a quarter
Dividing by a division of 2… Of course it’s going to cancel out. Like subtracting a negative.
Surely you don’t not understand double negatives? Just think of it like that.
Why is it not 0.125?
X/0.5 = X*2
Division with less than 1 is essentially multiplying with extra steps
Huh, thanks for the insight. I’ve never been able to get my head around weird division like this, and that sounds like a great rule of thumb for thinking about it.
Dividing by a fraction is the same as flipping one it on its head and multiplying it.
0.25/0.5 is (1/4)/(1/2)
To multiply it we’d flip one, either works but for this example I decided to flip the second one: (1/4) * (2/1)
The top half of the fractions (numerators) multiply together, then the bottoms (denominators) multiply together. (1*2)/(4*1) = 2/4 which reduces to 1/2
same as
x * .5 = .25if that somehow helps yaI suspect people might be getting confused by this because of colloquialisms like “divided in half”, “divided in the middle”, “divided by two”
things is, math doesn’t care about idioms
another area in mathematics that I’ve seen ppl (myself included lmao) suffer from this is propositional logic. like with the non exclusive nature of the OR operator
but this is all just a wild guess
I definitely struggle with any math that I can’t visualize in a physical way.
Sometimes it clicks if you graph it out with the confusing values on axes.
For that to be true it would have to say 0.25 / 2.
This is 25/50
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I understand this mathematically, but can somebody explain it logically?
you’re just doing 1/2 in a smaller scale. it makes most sense logically; it’s actually the numbers that are confusing you.
0.25 is half of 0.5
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Start with the reverse. If you had half a pizza and you wanted to divide it by quarters of a pizza, you’d be able to do it 4 times (there are four quarter slices in a half pizza).
But with this we’re asking how many half-pizza slices are in a quarter-pizza slice. The answer is that there’s half of one (half of a half is a quarter).
Multiplying by 0.5 halves. Dividing would double the number. 0.25 doubled is 0.5.
Sleep well!
y/x = x with y = x*x because 0.25 is 0.5 squared.
from the “wow factor” it’s the same as writing: 9/3 = 3 - not very wow at all
