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I used this tactic to calculate so easily. Instead of calculating 20% of 63 I used 63% of 20 and it is much easier. Feeling extremely confident in maths might as well win a Noble prize.
but it is 2 X 10%of 63. which is 2 X 6.3 so 12.6
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2.3y
Same amount of tax, but more.money
🔔 it's a bell prize. It isn't a Nobell prize
now take away the bell from the nobell prize and now you got no prize
That's ringing some bells
3.24, here we are made to learn all squares till 30
Do you move to pentagons on your 31st birthday?
boo, bad joke
Linus Math tips
next on the line: linus meth tips
linus sex tips
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2.3y
Likes bad trips
Linus drop tits
Linus drop kicks
Linus suck dicks
Linus eat shits
Linus feed chicks
Linus check squids
Breaking Bad moment 🗿
Linus meth trips
Linus 🗿
Pfp checks out
Linus Milf Lips
Coz it's values aren't changing both ways. it's just a change in the order of multiplication.
12 * (1/100) * 50 = 50 * (1/100) * 12
Was looking for this. I don't remember when I learned percentages were just multiply and move the decimal twice, but it has never left my brain and it has been immensely helpful for quick maths.
How do other people do it if they don’t “multiply and move decimal points around”
13%100 100%13 lmao
13% of 100 is 13 100% of 13 is 13
I mean technically true..
Not technically. It is true lol
Technically both are true
Not technically.
Explain to me how something that is true is not also technically true
Technically implies it might not be true under specific conditions. What is true is true. What is technically true could he true on paper, but not true in practice.
Yeah sorry but you just don't know what "technically" means
In the technical sense, as in applied maths, you're correct that I am incorrect :). In everyday conversations, "technically" is used to express what I explained to you. Both sense are relevant, and I may have interpreted the technical application as the casual sense of the term. Apologies :).
Don't apologize to these cretins!
Bro what you are doing is called "playing semantics." In reality, you are applying a connotation of the word technically to be its definition. You are not 100% wrong but definitely NOT correct.
sigh
I'll give you a concrete example of the same issue.
Overpass.
Where I live, it is known as a "viaduc". Viaduc, however, isn't an overpass at all. It's a train track passing over a valley, not a street that passe over another street.
In the familiar and widespread use of the term viaduc, we all have the same idea that it is a street passing over another street, in a perpendicular direction. That's what it is for us. Just like a tomato is also a vegetable for pretty much everyone while it's in fact, a fruit.
I'm not saying that to be a dick nor to make absolutely sure that I am right. If you read again, I specifically said I may have misinterpreted it as something else, AND I apologized. What else do you want??
Didn't know ancient Rome already had trains, neat
“A concrete example”
I see what you did there. I’ll see you out sir.
Nothing. I am just a random redditor! Spreading my values on this platform whether it's welcome or not... Like everyone else! Didn't mean to offend lol.
43% of 492
492% of 43
Seems right to me
It is.
43% of 492 = 0.43 × 492 = 211.56
And
492% of 43 = 4.92 × 43 = 211.56
Which is the same
Holy fucking shit.
my mind had just been blown..
Yea thats why i hate about this “life tip”. They use numbers like 12% of 50 which is easy af but im sure nobody ever uses this rule do get an answer to a real problem
well yeah its harder but it still works. of course you'll rather use that „trick“ with other numbers BUT it still works
That's quite impressive, I can actually use it irl
Thanks OP
Ok let's try with this exercise: how much is 36% of 82?
29.52
Good, twenty points to gryffindor
*29.52 points for gryffindor
That is 82% of 36
Outstanding move
I mean.. You're not wrong A×B = B×A
hahaahah , my dear maths teacher, be ready..
Seems to work with numbers over 100, too:
30% of 150 = 45
150% of 30 = 45, which is an easier calculation in your head.
How tf did they not tell me this when I was studying A-level maths?
This works with any number, the equation for it is true.
But unfortunately, real life doesn't throw whole numbers at us.
0.3*150=45 how is that harder
I never thought of it, but it makes sense since it's just multiplication with a *0.01 hidden away
Good wisdom indeed.
I never expected to learn something on this app, but thanks nonetheless.
the amount of times I learned something seemingly useless on this app and immediately forgot about it the next day is surprisingly high
Its a neat trick, but as many have pointed out it is actually quite obvious when you think about it.
Percentage is just something divided by 100 And you can order things that are multiplied together as you want, so
12%×50 = 12/100 × 50 = (12×50)/100 = 12 × 50/100 = 12×50%
Exactly and when I wrote this some idiot came and said "HUH??"
Even easier: just see "%" as an abbreviation for "0.01" (and "of" as "*" in this context):
45% of 20 = 45 * 0.01 * 20 = 900 * 0.01 = 9
Also, this way it is obvious why the rule in the original post holds.
Are you sure that 900 * 0.01 is 900?
So 69% of 420 equals 420% of 69?
...
Oh, it checks out. It's 289,8.
I mean that's how multiplication works but Ok.
A times B is B times A.
WHAAAAAAAAAAAAA
Wow. I wish I knew this
You do now
So... 99% of 5 is 5% of 99?
Yeah. They both equal 4.95
HOLY SHIT HE'S RIGHT MATH CLASS FINNA BE SO EASY!!!
Wait, I just realized the logic behind this.
13% is 13/100
When you multiply a fraction by a whole number eg a * b/c
, 'a' and 'b' are interchangeable.
Therefore, 12% of 50 is actually 12/100 * 50
and you're allowed to switch 12 and 50, creating 50/100 * 12
or 50% of 12
It's just fraction maths!
I love it
that's because x percentage of y is (x*y)/100
And it took me 25 years to realize this...
Meanwhile in an Alternate Universe:
-> I dispense wisdom.
-> What is your wisdom.
-> Use calculators for simple math, at this generation it's almost unnecessary calculate in your mind.
-> That's good wisdom.
.12x50 = (0.1)x12x50 = 12x0.5
Huh. This seems like very simple math but I’ve never thought about it before. Thanks op!
That's just how multiplication works.
You have no idea how much I needed this
mind = blown
I always save that type meme..the panzer of the lake is good to
ok lets try 69% of 100 and 100% of 69
It... works?
welcome to the matrix
Wait, that works, I was perplexed for a moment there... Not my finest moment...
69
It works lol
Omg, this is very wise wisdom. Thank you, you have helped me greatly.
🗿
69% of 420 is 420% of 69? noice
ohhh bruh if we calmly think about it, it's quite simple, but for some reason my dumb brain hadn't figured it out. Now this is gonna make my calcs easier
Whoa
Mind blown
My brain: Damn, get this guy a upvote
Yeah, it's not that big once you write percentages as multiplication.
Like, let's have 37% of 66.
So you want a 37/100s of 66. So that's just like 660.0137.
66*0.01 gives you one percent, one hundredth of 66. Then you just want 37 of it, so multiply.
Since that's commutative, i.e. you can change the order of numbers. You can then just say you want 66% of 37, because that's the same as 370.0166.
I'm over-analyzing this and I hope I don't come off as some arrogant "look at me I know math". If so, not my intention. Just wanted to show it's actually just simple multiplication interpretation :)
TIL
Doesn't anybody automatically reach 1/2×12, it's really not that hard to throw in a 100 in the denominator with those 2 numbers, shit like that won't work when the calculations are not that clean to get cancelled out eg. 39% of 1234 I hope I'm not coming across a jerk but ig stating a random fact about numbers gets people overanalyzing stuff lol
Thank you!
Yeah, 18% of 20 is just 0.18x20 which is 18x20x0.01, and the commutative property of multiplication does the rest
50 * (12 / 100) = 12 * (50 / 100) = (12 * 50) / 100
When it comes to only multiplication (division can be seen as multiplying the reciprocal), it doesn’t matter what order you do it in
That's because 0,01 * x * y = 0,01 * y * x
When only multiplying the order doesn't matter.
Oh my god, this is incredibly helpful. Thank you, I will try to remember this.
Holy shit it works
give this man a medal
0% of 100 is equal to 100% of 0 Damn maths
im saving this wisdom thank you sir
Yes. God bless you young man.
I did the math and the numbers check out.
Proof:
(x%)(y) = (y%)(x)
(x/100)(y) = (y/100)(x)
xy/100 = xy/100 ✅
because it’s (12x50)/100 = (50x12)/100
Well that's a neat trick.
Thanks OP :)
I'd still rather pay 12% taxes over 50k than 50% taxes over 12K.
for anyone wondering why this works heres the thing,
Think of 2 numbers, we're gonna call them x and y[I'm qalso using 50 and 12 like in the example if you cant undertand using all the letters]
now lets also remember the fact that a percent is just that number divided by 100
so using this we can say
x*y% = x*y/100 [50*12% = 50*12/100]
Now heres the thing, since multiplication and division are jsut the same but with different ways of doing it
you cancheat and wite it like so
xy100^-1 [50*12*100^-1] (^-1 is just a way of sayingits dividing )
now since we know that you can multiply numbers in any order you want and get the same results, you can write it like
y*x/100 = y*x% [12*50/100 = 12*50% ]
Good lird
Yes A/100 × B = A × B/100
Ratio
Wooooooooooowwwww
this is the wisdom everyone needs
Wtf how did I not realize this earlier
That's a good meme. 👍
The percent symbol walked up to the exclamation mark and said, "Ya know, you look like a portion of a man standing on his head."
The exclamation mark yelled back, "Yea well you look like a crooked dick trying to titty fuck!"
And the question mark was confused?
thank you, I never knew this
Proportions
:O
Indeed .. a good wisdom
Can someone explain to me why 12% of 50 = 50% of 12 but not 24% of 100?
Say we have a pie of 4 pieces and one is dyed red. That would mean 25% of the pie is red. If we cut every slice in half to make 8 slices, we would have 2 red slices, which is 2/8, which is still 25%.
If you had 6 red slices of a 50 slice pie and cut them all in half, you would have 12% of the slices be red. If you sliced every one in half, you would have 12 red slices out of a 100 slice pie, which is still 12%.
Basically, the percentage only changes if the ratio of red slices to total slices changes. Otherwise, you still have the same pie, just with more slices.
Holy shit you are actually a genius
thanks I have math next semester in which is next week.
holy fuck i’m saving this
Hily sh*t, I've been a massive math nerd my whole life and never realised this.
I'm just glad I have a calculator in my pocket
I learned this recently and its soooo op
Damn that is genuinely cool
Or maybe just multiply 50 x 0.12 it works always
it’s kinda like dividing/multiplying fractions. for example
50/1 divided by 12/100, is the same as doing 50/1 multiplied by 100/12
You can also Multipli 50 X 12, then remove the first 2 digits, (which is just Dividing by 100), to get the result
All methods = 16
It makes sense because 50÷100×12=12÷100×50
Thank you so much, I actually have an exam tomorrow and this will help a lot, I will remember you bro!
The trick here is that 12% of 50, we can translate it to (12/100) * 50, so technically speaking, because of multiplication we can write 100 anywhere, so it will be 12 * 50/100.
Champion. Thanks
Oh my.. what.. what??
Damn that’s good
There's like 2316 different ways explaining this in the comments and my dumb ass still doesn't understand
THE TEMPLATE, ITS BACK, ITS NOT DEAD
I figured this out when I was getting my alcohol server's permit. Since 12oz. of 5% ABV beer has the same amount of alcohol as 5oz. of 12% ABV wine.
I was not aware of that
As a university mathematics educator with three mathematics degrees, I didn't know this trick. I feel so ashamed 😭
Because there is no such thing as percentage. It's basically some number divided by 100 and therefore it's 0.0x so you can easily multiply them with each other moving the dot wherever you want.
Huh?
It’s M U L T I P L I C A T I O N ✨
Or just get 12% of 100 which is ofc 12 and do 12 / 2 which is 6
Oh my godd.I fucking love you dude no homo
i missed this meme
You just solved my entire math homework, thanks
That… that is actually useful… I needed to know this earlier.
Wtf blow me daddy
fucking thank you for this
Gud meme
Ty now we have a new subject at school
this is what god looks like
So 13% of 1,435,238.34 is equal to 1,435,238.34% of 13. Makes it so much more simpler.
as someone in math class I salute you
Thank you for your wisdom
Holy fucking shit man
Will help in my engineering entrances. Thanks Comrade
I mean isn’t that kinda… obvious?
Man, I wish schools actually taught things like this and not just make students memorize shit with no explanation on how it can be applied to the real world
You saved my grades in math thank you dispenser of wisdom
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2.3y
thats more math then a learnt in highschool
And English, too 🤣
38% of 85
= 32.3
So 18% of 18 will be 18% of 18. Mmmmmmmmm math never been so easy