This is pretty much what i see when my sons new math solutions are being presented to me. If they use any normal math, they are told those are grandpa math, dont use it
I know there's a joke at the end of that clip, but that method always seemed weird to me. Like it works for small numbers but if someone says 12x13 I'm supposed to draw a huge tic tac toe board and count over 150 dots?
erm.. Your solution would be 5 and the original solution is 7. You could be thinking of making the original easier to read by making one of the numbers a factor of 10, but then you have to do the same thing to the other side of the equation (or with this example, add the same number to both operands), not the opposite.
deaththeunholy
LogicalLimes
It’s like watching Congress trying to pass a budget… or… well, really anything really.
The5oClockShadow
16 - (10 - 1)
a1b2c3Cat
This is pretty much what i see when my sons new math solutions are being presented to me. If they use any normal math, they are told those are grandpa math, dont use it
thescottishfox
... ... ...
ChetinBey
Strong urge to punch this guy in the throat intensifies
maobezw
feels a bit like sorting every villains file under "c" like "criminal" ...
BeKindToOthers
As someone who studied a lot of math in college, i don't know how to solve this without just knowing that 16 is 7 more than 9.
thecsem
Heres how the math works in my brain for no reason. 16-10 = 6. 10-9 = 1. 1+6 = 7. I basically do most mental addition and subtraction this way.
makeamericasmartagain9000
Pulling out his WD40: „we are gonna factor that“
Higure
Yes, if you factor a thing, and then multiply out the factorisation, you are indeed back where you started.
ObiHaiv
Guy's ready for a position on Trump's cabinet.
Jyakalope
https://media1.giphy.com/media/v1.Y2lkPWE1NzM3M2U1dmtnOHE4NGR5ZjdzM2twYm5nMzMydjQzeTRpNHB6YWw5ZmkwbHlncSZlcD12MV9naWZzX3NlYXJjaCZjdD1n/VEsfbW0pBu145PPhOi/200w.webp
thotterpop
Be knew about the difference of squares. He's gotta be in the top 16-9% of people his age that know how to properly apply it.
REOJackwagon
To be fair, he sounded Canadian, so that number is probably higher, 16-9% would be 24-13.5% CDN
Solkanarmy
never learned it before but I appreciate it
ThatOtherGirlYouKnow
16-9=10 FASTMATH!
Is it right, no. Is it fast, yes.
Is it approximately correct? Absolutely.
galapas
Kyen155
someone somewhere...
gablestout
Billis75
iMcFly
Quebeker
7*1=7 there’s your solve.
LespritDeLescalier22
holy FUCK
JustJimWillDo
At some stage you just have to stop and count on your fingers.
justplainvanilla
sadurdaynight
I was hoping he'd write "16" then wipe the board and find out he used permanent black marker.
LespritDeLescalier22
JEaNiuS
Rihn
supervillin
I know there's a joke at the end of that clip, but that method always seemed weird to me. Like it works for small numbers but if someone says 12x13 I'm supposed to draw a huge tic tac toe board and count over 150 dots?
malbec
There’s simpler versions of it on the youb toobes
Alibababert
No, you draw one line for each of the ones, and then 2 and 3 lines. You count the intersections diagonally. So will be 1×100, (2+3)×10, (2×3)×1 = 156
supervillin
I'm glad it's not what I suspected, but also I still don't understand. Time to go learn though, thanks!
rubypilgrim
This feeds math anxiety.
REOJackwagon
What a square
madeejit
Just take pi as 22/7, and then you can just do it all in your head.
bripi
fuck that noise, PI IS 3 bitches!!
WolvesAreTheBestPeople
Is this a fucking joke?
TK421isAFK
Is math a fucking joke to you?
FishieStardust
https://media0.giphy.com/media/v1.Y2lkPWE1NzM3M2U1ODBpYWp4ZmhudjFraWMwZzBra2pvNDNyZHFtaHZlcHZjOGJjanR0NSZlcD12MV9naWZzX3NlYXJjaCZjdD1n/88iGf3kIreLnTWh2DC/200w.webp
RaymondChoppard
Nope. All these calculations are perfectly correct.
DoingItWrongSince1980
No it's a math joke
deaththeunholy
startedfromlurkingnowimhere
https://media2.giphy.com/media/v1.Y2lkPTY1YjkxZmJlZTZtZGR6MmhibzI4a2xhZDc4b2tkeHppZGs1ZTE4bnY3aWlqcWhlNyZlcD12MV9naWZzX3NlYXJjaCZjdD1n/arXSjaMhRnKV2/200w.mp4
luciferian669
https://media4.giphy.com/media/v1.Y2lkPWE1NzM3M2U1ZGRlYTFnaHNyYW1hdnIyM2I5dW8weGU4YmIwMWtuajV1eGRwYmhuNiZlcD12MV9naWZzX3NlYXJjaCZjdD1n/3oEdvcS5bqdtX0tvJC/200w.webp
itdweeb
kylepayton1360
So what’s the answer?
MoonAmericanFloydHeywoodR
The point is, there are no simple answers in life.
DeadWhiteMale
He could have stopped so much earlier. (4+3)(4-3) is 7 times 1. And we know what 7 times 1 is equal to.
bripi
WE do...he, unfortunately, does not
MoopsyLD
anyone else just take 1 from 16 and add it to 9 to make it 15 - 10?
bripi
yeah but you gotta be taught this kinda majik, it ain't comin' from the blood
GGGenom
16 - 9 = 7. 15 - 10 = 5.
llandy
erm.. Your solution would be 5 and the original solution is 7. You could be thinking of making the original easier to read by making one of the numbers a factor of 10, but then you have to do the same thing to the other side of the equation (or with this example, add the same number to both operands), not the opposite.
MoopsyLD
so apparently i never learned about the whole equality thing in equations so.. fuck usa
ToenailClippingsJar
You mean just add 1 to both making it 17-10 I hope?
Please?
furrykef
I wish I'd figured out that trick before I'd graduated from high school. Makes mental arithmetic so much easier.
lappelduvideonfullblast
You would not have graduated employing that trick. That trick is indeed a trick, as in ploy, ruse, or chicanery.
RadiDaddy
RadiDaddy
The701
wait... is that Shemp?
RadiDaddy
Yep. It’s from their 1941 movie “In The Navy,” with Shemp Howard as Dizzy.
androgenoide
Possibly even better... https://www.youtube.com/watch?v=jSrPlf4GBHc