1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+=75

Too inefficient. 48+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1=75

Nah even more efficient: 76-1=75

Way too inefficient 75=75

You can just write 75. Why writing it 2 times duh

***FATAL CRASH HAS OCCURRED***

Same here, haven't really needed maths to that extent since I left school. Brain.exe has crashed, please reboot

I can, I just tend to grab my phone for larger numbers as I get lazy, I've been outta school for going on 15 years now, and very rarely need maths in my day to day life, except maybe for smaller sums, which I work out myself.

why are you on r/teenagers? I don't know any teen number that is out of school for 15 years

This made to it to /r/all so probably a lot of us old folks wandered in.

Same, I was confused what's so weird about it, its freaking easy, there are multiple ways around it around the world. Nothing special, turns out it was r/teenagers stuff, then I get it.

Old fuck from r/all checking in and am verifying I can't do math worth a shit.

Can’t fault a man when he’s honest.

They’re commenting because they can’t do math what do you think happened

Vaping am I right my fellow teenagers?

Thats right! Now your opinion on.. Tax evasion? If you will.. explain why we find it funny, fellow teen.

True, however there are no restrictions saying only teenagers are allowed.

(8+7) + (20+40)= 15+20+40= 75

Round up to 50 and do 50 + 27 = 77 then minus the 2 I used to round = 75

I take the two from the 27. 25+50.

Scrolled way too long to get to the correct answer.

This is the way i wish i did it, but always end up defaulting to u/TooruS911's way

(27+8)= 35 (+40)=75

(48+7)=55 + 20 =75

1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1 = 75

(27+3 =30) +45=75

(8+7=(8+8=(16-1=15))) (20+40=60) (60+15=(60+20=(80-5=75)))

30+50=80 80-5=75

This is how it went for me

(7+8= 15) (2+4= 6) (6+1= 7) Therefore, 27+ 48 = 75

I was reading the other ways and thought they all look so overly complicated. Then you wrote out how I do it and I see that writing out any method probably makes it seem overly complicated. I would just add to yours that I immediately visualize the two numbers stacked vertically, then my brain works it out like you described, and it's instant.

Same

Me too

Yep

Wtf

Add the one from the 15 to the 6 to get 7

I would be lying if I said tua5 was false.

THAT* FUCK, ah I'll keep the misspelling around.

Yess

Correct

20+48 = 68 + 7 = 75

I didn’t realize the best way was so underrepresented.

Yeah I'm surprised, it's literally less work than everyone else doing like 2-3 extra steps.

Scrolled way too far to find this

So are we old, or something? Because it seems like the other ways are waaaaay too complicated for this

Late 20s for the demographic sample

Also late 20s here. Might be.

33 here.

Nah, I think we’re just the smartest

yesss i was looking for this comment

thank you for writing this so I didn't have to comment

Same, and I just commented the same thing lol

I'm sad I had to come so far down to find this one. I'm with you buddy.

Dozens of us!

48 + 7 = 55 + 20 = 75

This is the way

This is the way

This is the way

finally found the right one

Adding a single digit number (7) to 48 is easy. Then adding an even multiple of 10 (20) to that is also easy. that’s only two additions. I don’t see how any other way could be easier.

That's how it works in my head.

Finally someone said it. Scrolling down, I felt like I was taking crazy pills.

get those pesky single digits out of the way first.. then it’s easy

This sums it up so well. Congrats on having that special scale.

The only way to do it 🥰

48+2=50 50+25=75

Yes this is how I see it too!

I always equalize the digits to 5 or 0 ex: 77 + 77 55 + 99 54 + 100 = 154 or because of how a lot of retailers make their pricing scheme: 0.99 + 1.43 1.00 + 1.42 = 2.42

This is the way

It’s like puzzle pieces in my brain. The 8 in 48 is like a little slot that 2 fits in.

Yeah this is pretty accurate.

I love this explanation and will be using it in the future to explain how I math.

Yep, did the exact same thing instantly

This is the way

As a physics teacher (a really young one, don't worry) I agree

As a math teacher (an old one) I confirm.

30+50=80 80-5=75

Dis what I did

Only correct way to do it

I agree

20+40=60 7+8=15 60+15=75

For me its kinda like this 20+40=60 If 7+7=14 And 8+8=16 So 7+8=15 because we took one out 60+15=75

Eh... the 7+8 for me is more like If 7+7=14 But 8-7=1 And 14+1=15 Then 7+8=15

For me it's 7+8 5+2+8 5+10 15

For me it’s: 27+48=… Wait, was it 48 or 47? I need a second loo- oh hey I almost forgot, the little mermaid live action comes out this week. Can’t Disney make a new original movie, one that’s that’s actually solid?

Wait donuts where it's 20+40=60 and then 7+8=15 15+60=75

Squirrel=75

Dude squirrels are crazy they can survive from any height and they make flying ones I think they are part of a dlc man some companies just keep pushing dlc instead of fixing their game it's ridiculous

just like how burd are obviously not real and government drones cause like how tf can something fly without engines its just not possible like they cant just flap a lot and float how does that make sense

I just moved 2 from one number to the other, so 27 became 25 and 48 became 50. Then i did 50+25=75

I do 7+3+5

This is the way ^

For me it's 7+8 7+3=10 8-3=5 10+5=15

For me it was 20+40=60 60+7=67 67+3=70 8-3=5 70+5=75 ==75==

You have to break down 8+7? It's more simple to just know that's 15.

Idk I only have 1.5 braincells, while one tries to remember 60 the other doesn't have enough support to operate quickly

Yeah, this is a really weird thread for me. I prefer logic over memorization more than anyone, but I feel like 7+8=15 is one of those additions you should just know automatically, making 60+15 so much faster than any other way to break it down.

These people are busting out the entire chalkboard for a simple ass calculation

that is some sociopath math right there

Dont you mean some... Sociomath?

Yes, for some reason 7+8 scared me, so I did 8x2 and subtracted one

Way easier to just do (48+7=55) + 20 =75 in my head.

Same. Adding a single digit number (7) to 48 is easy. Then adding an even multiple of 10 (20) is also easy. And that’s only two additions. I don’t see how any other way could be easier.

Similar but instead 5+2+8+40+20 =5+10+40+20 =75

Same

[удалено]

For me its 27-2=25 then 48+2=50 then 50+25=75

This is also my method

This is the way

Literally!

Real

the superior method

8 + 7 = 15 4 + 2 + 1 = 7 75

Every time I had to scroll before finding this made me wonder why I am the way I am.

This is how I was taught in the 80s and these posts make me want to cry. There are so many easier ways and my whole generation was taught the wackest shit. I could be so much better at adding numbers in my head if we had common core.

Meh you practice enough and it becomes second nature to just read right to left. I actually had to pause a second to work out what is actually going on in my head as I don’t think about it. Otherwise you have to do all kinds of 20 + 40 is 60, 7 + 8 is 15, 15 + 60 is 75. Vs 7+ 8 is 15 add 4 + 2 for 6 and increment by 1.

Im so relieved to find this comment.

I thought this was like the way it was taught in schools but based on the comments idk

Same I was getting scared for a sec

FUCKING THANK YOU THIS IS WHAT I DID

This is the way. Gen X here. Way before common core. And this all happens in a second in my brain. I don’t know what all that other crap is above this. I can stop scrolling!

I’m a millennial and I did it the same lol

Me too!

Those other ways seem like way to much work...

It is. The amount of work to keep the numbers straight on your head rises significantly the more you add. Sure 27 + 48 is simple with their system but do 27 + 48 + 32 + 64 + 152 and it becomes harder to keep everything straight doing it their way instead of just working right to left.

me too

Yassss

Me three

Hint: we’re old

Thank you, I thought I was taking crazy pills.

blocks move around

48-3=45 3+27=30 45+30=75

Oh my had to scroll too far to feel seen

Fr

Same here, only because 27 was the first term.

finally someone doing it correctly

this is the way

take 2 from 27 then add it to 48 making it 50+25 27+48 = 48+2+25 = 50 + 25 it's a decent bit faster than it sounds though

finaly someone who does it like mee

Similar, I take 3 from 48 and do 30+45

Yesss

48+20 68+7

Thank you. Only fucking sane person in this thread.

Proud to be among the 16 gigachad upvoters who add using this method

It's summer. No math

It’s not summer

7+8=15, carry the one 2+4=6+1=7, therefore an answer is 75

I am surprised I had to scroll so far to see this. I sort of visualize the addition as though it’s written on paper (the way we were taught in elementary school) and do it mentally that way. This was the only comment that seemed to convey the same method.

30+50-5=75

Scrolled too far to see this

This is the way

[удалено]

20+40 = 60 7+8 = 15 60+15 = 75

Same

48+20= 68 68+2=70 70+5=75

This is the way

for me it’s like . . . . what. (I have dyscalculia)

I just googled this and I can’t tell you how relieved I am to hear there’s a name for it. This has been a lifelong struggle for me, omg I feel so seen right now

27+8=35 35+40=75

It’s uh, the uh Man, I dounwannadothis

i ate my phone on accident

20+48=68 68+7=75

It stops I was not prepared for maths

27+3 = 30 30+45 = 75

I become suicidal

It’s like doing it on paper in my head it’s vertical and the numbers just move around and change idk how to explain it lol 😂

I've been looking for this answer 😂 I just visualize the math lol

Ok I stopped scrolling and posted about how I can just see myself working the problem in my head but it’s a hard thing to explain to people who don’t do that. I found my people

Vertical for me too.

50 + 30 -5

20+40= 60 7+8= 15 60+15=75

I say screw this and get a calculator (arithmetic is hard)

20+40=60 7+8=15 15+60=75

8+8=16, 16-1=15, _5, carry the 1, 4+2+1=7, 75, so 27+48=75

This is similar to what I went with. I know 8+8 is 16, so 1 less would be 15. So I know the last number is 5. Then I just add up the single digits to 7. I cannot look at 8+7 and know it's 15 without first thinking of 16 from 8+8. (7+7 being 14 would work too I guess, but that didn't even mentally occur until after).

Thank goodness.. I found my people. I had to scroll a long ways my dudes. I’m just happy to not be alone. Something tells me we are “unique”.

(48 + 20) = 68 68+7=75

20 + 40 = 60 7 + 8 = 15 60 + 15 = 75 I work with the most significant digits first because after the first addition I have already got an estimate of the final number which is useful sometimes.

20+40=60 7+8=15 60+15=75 I’ve gotten really good at math doing NBA points parlays. My bets are god awful, but it’s about the math we make along the way.

7 + 8 = 15 20 + 40 = 60 15 + 60 = 75

30+50-5=75 Rounding has always helped me with quick math.

First 20+40=60 Then 60+8=68 Last 68+7=75

20+40=60 8=5+3 so 7+3=10 10+60+5=75

48-3=45 27+3=30 30+45=75

27 + 48 ____ 75

48 + 20= 68 68 + 7= 75

48 + 20 = 68 68+ 8 = 76 76-1=75

4 + 2 = 6 8 + 7 = 15 60 + 15 = 75

27+48 turns into 35 +40 or 20+55

20+48=68, 68+7=75

25 + 50. Easy!

48 + 30 = 78 - 3 = 75

48 + 7 = 55 55 + 20 = 75

(20+40)+(7+8)=69

I do 20+40 is 60 then 7+8 is 15 so 75

Take two from 27 and at it to 48. So then it’s 25+50 which is 75