Introduction to ratios | Ratios, proportions, units, and rates | Pre-Algebra | Khan Academy

What a ratio is. Simple ratio problems.
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[@mikeg5232]

For anyone having trouble with this... I couldn't learn this when I was in middle and high school. I went onto college and found out I was capable of learning this stuff, just not in a standard classroom setting. I now have two degrees, one of which is a mechanical engineering degree. I found myself here because I wanted to brush up on some things for the military ASVAB test when I remembered how difficult this was when I was a kid. So please don't feel stupid if you're having difficulty learning this especially if its your first time. No one is above math.

[@sage3837]

Inspirational

[@dehydrated17yroldbitch77]

thank you very much i feel inspired now

[@slashvalkryie123yt8]

Thanks I feel a lot better about my test

[@ab-vq3yy]

:)

[@ANDREWL11456]

Thank you dude that’s inspirational

[@mizuchi999]

Ratio bozo

[@djpersley7651]

😂

[@Gavxxl]

😂

[@Marwann99]

W

[@ilykysa]

Own that freak

[@ejsonmon]

Own that fraud teacher

[@darfy]

ratio

[@lenispicker69]

L + you lack a father figure

[@jakeberry9931]

@@lenispicker69 .

[@lenispicker69]

@@jakeberry9931 L again

[@ee-jn1wy]

@@lenispicker69 L

[@Brynica]

@@ee-jn1wy L

[@khanacademy]

Thanks. Don't know what happens in my brain sometimes!

[@mysterygirl7252]

Khan Academy I get ratio now thanks for your help

[@sugarpie822]

Thank you

[@isabel_bonilla6368]

Khan Academy good

[@angelgarcia1959]

Khan Academy

[@mohammadhuda3978]

Ahaha

[@bulbysaur248]

are we not going to talk about how neat he writes with a *mouse* like actually, wow.

[@shoki5271]

i dont think he's using the mouse lol

[@MM-uw5uj]

im pretty sure that hes using a drawing pad and recording it from his screen

[@MM-uw5uj]

NTF SQUAD 67 yeah that’s how you use a drawing board I have one .-. edit: PLS I CAME BACK TO THIS COMMENT WHY TF DID I PUT .-. ANYWAYS I PROMISE I DONT TALK LIKE THIS ANYMORE

[@sriramkomanduri]

@@MM-uw5uj, I was wondering how on earth does someone write so neat now I know

[@MM-uw5uj]

sriramkomanduri lol yeah 😂

[@brother5671]

Ratio

[@dracokinerek]

didn't ask + ratio

[@Pabloremixx]

@@dracokinerek *COUNTERS YOU MENACINGLY*

[@chickenmeatpizza]

dint dint ask plus ratio​@@dracokinerek

[@haleweyahuissen9191]

Hey there but how did 5:10 changed into 1:5 shouldn't it be 1:2 ?

[@lerie_10]

yes

[@homesteadhousewife9964]

Yeah I’m pretty sure the only way to simplify it all the way is to divide both numbers by 5 not 2

[@Cassandra-pb3bo]

right! He said divide both by 5, 10 divided by 5 is 2 not 5.... so it's wrong and he made a mistake?

[@ktqt8544]

Thank you I thought I was going crazy lol

[@bossalini2396]

What a great teacher. the examples are awesome. I'm 31 struggling with my math GED. I will definitely passed listening to this man. I've even found ways to simply to the problem without going through the full process

[@lolkillem13]

Ratio + I hope you passed

[@joshuelsanchez.]

@@lolkillem13 Ratio

[@deepakbarii]

Youre 37 now

[@big4headedGangster]

Twitter loves this one.

[@luisj_jr07]

ratio

[@civ3967]

fwluix07 L

[@Brynica]

Ratio

[@ambergrzybowski6669]

I don't get this stuff in class, but when I come home and watch it from these videos I get it instantly. Thank you !

[@ratiogod9158]

Thank this ratio

[@Mike-ev2eb]

3:27 should’ve been 2 Horses. Correct ratio should be 1:2 or There is 1 dog for every 2 horses.

[@ashutoshhiremath720]

Yeah that got me sorta confused lol

[@nicoleoda508]

@@ashwinmaradia3685 he said that wait let me check

[@ing.m97]

I noticed this too, thank you for pointing it out, Mike!

[@oskarAlfonsoSanchez]

This guys keeps doing mistakes, he needs to check his videos for errors before putting them on youtube. Thanks!

[@akalajamir6867]

Yes i was gonna tell that

[@seemuous8037]

Ratio then

[@kojo4680]

i hope i pass my test for tomorrow

[@kojo4680]

YaXD

[@humairajahangir9782]

Scrapapapap

[@deannaawad984]

Mistyqu I have a test tomorrow

[@jessrichardson6947]

Kojo SAME

[@mridulmadhvidhiman5334]

Yes

[@Demon_vv]

Online school when there is COVID-19 be like:

[@dungeondemonrbyt4354]

like sometimes messed up, but no school :)

[@dungeondemonrbyt4354]

.

[@raenc]

me the day of my big exam going back to things i learned 2 yrs ago 😭🤚🏻

[@nani.7151]

I would just prefer no online schools lol :)

[@notcynx-_-2766]

Bro I can’t do this shut up plz😂😂😂😭😭

[@bushra2330]

Sal great explanation. Just one correction, at 3:59, ratio of dogs to horses is 1:2 not 1:5

[@BluTwob]

Right, I had to pause there, also. The ratio of dogs to horses 5:10 reduces to 1:2, 1 dog for every 2 horses.

[@felipenewcomb906]

9:50 "Each group has three girls, each group has three girls. So, each group has three girls. Each group has three girls. SO how many girls are in each group? There are three girls." 😂

[@ayomideadesina4055]

Felipe Newcomb funny

[@charliewinter8678]

so true

[@ayomideadesina4055]

ikr😄😄😄

[@jessicahauserman9110]

Felipe Newcomb this will help me in exams I'm taking this year

[@peihu3201]

Felipe Newcomb he just wants to make sure that you understand, or he likes saying it more than one time.

[@carmaela2689]

I haven't done ratios in 20 years. I was trying to help my daughter and the way her lesson explains ratios is impossible for me to understand and it wasn't jogging my memory. Your explanation was so, so easy to understand and helped us greatly. Thank you!

[@mathslogic7769]

😂😂😂

[@jakeberry9931]

This ratio is impossible to explain though

[@pojestz]

ratio

[@tonyesq.8930]

@@jakeberry9931 W

[@charlottehuddy3]

His handwriting is amazing.

[@ratiogod9158]

This ratio is amazing.

[@sage3837]

I haven’t done any math assignments LMFAO I NEED TO HURRY UP

[@speedycyclone3111]

.

[@unkown-_-personal267]

Bro i feel ya

[@mazzy850]

i love the fact that everyone in the comments has an anime pfp- smh stop watching anime and do your work

[@sage3837]

@@mazzy850 no

[@gambsy]

do u know what "LMFAO" means?

[@aleks6900]

FINNALY A GOOD EXPLANATION MY TEACHER CANT TEACH SHIT

[@Itisheylel]

same here, man!

[@mrrainbow7349]

Kijewski calm down no need to cuss

[@manowasim2743]

cant say same about my teacher but i dont understand her she speaks too damn fast

[@muhyee294]

Kijewski

[@luuvdoses]

LOL

[@piner5231]

ratio + you fell off + didnt ask + dont care + spelling bee

[@jrexx2841]

Dang! That was crazy, but I don't remember asking + I'm still finding the person who cared + ratio

[@oz_man8y]

Ratio😳

[@katherinekasparov4366]

AGH WHAT I have my math test tmr and its like 50% of my grade and this guy just made me understand ratio in 14 minutes - if the guy who made this vid is watching, you have taught me more in less than 15 mins then my math teacher has taught me in 2 years THANK YOUUU 🙏

[@ilykysa]

ratio + yb better im afraid

[@fishslimeball3254]

W

[@antt9676]

But wouldn't the simplest form be 1:2 not 1:5?

[@moosakallu6966]

Ye hu dub

[@ramonjalmaani4837]

yes. it should be 1:2.

[@codergirl6790]

yeah, that would be correct

[@jalisaclarky]

Ahhh just the comment I was looking for thank you

[@david-yy6pk]

yes, the reciprocal ratio.. I believe it's a typing mistake. you are correct. 1:2 not 1:5

[@Yee.5ang]

I miss the days when ratio was a math term

[@adrianfonseca1121]

These vids are really good I watched this not knowing a clue what ratios are and now I am a beast at it

[@waleedd857]

Ratio + you fell off + the hood watches brilliant now

[@ratiogod9158]

.

[@waleedd857]

@@ratiogod9158 L

[@kaytee627]

W then

[@lenispicker69]

@@waleedd857 L + fatherless + find a job

[@waleedd857]

@@lenispicker69 I’m actually looking for a job 😢

[@lioudmilajoasil8951]

Lets see..... smart channel..... smart person.... shows how to do math vids, helps more than 4 or 5 millio..... OH wait 3 million subs. This channel deserves 5 million subs

[@andrewthenerd6830]

joseph bherso I think 10million

[@cahayatimothy2039]

Man yes....my teacher always don't believe me when im explaining who did.....IT.....she just cut it of

[@cahayatimothy2039]

You deserve to play asphalt 8 airborne

[@mimiraa1097]

khan academy doing school stuff or pewds doing Minecraft lol

[@ys1r]

it has 5 million now

[@tanasw0rld741]

Counter ratio

[@spoonsrattling4]

.

[@ilyneemz]

woah. I'm in 9th grade now and tryna learn this, when I realize this video was uploaded in 2009. I was 4 o.O

[@Moonmoon-tl8js]

Naeema Garcia lol same, I’m hella confused but he showed me the easiest way. I want him as a teacher

[@des-eq7lf]

I was born in February 2008 so I wasn't even 1 years old when this was uploaded

[@jonathanvincent5348]

you learnt this in 9th grade? I learnt this in 5th. Struggles living in asia

[@Ia-dg1bg]

@@jonathanvincent5348 same but I don't live in asia

[@ogtv2769]

Lol im in grade 9 too and im tryna learn this because i didnt pay attention in class

[@ChristianNeoOritoYTCHANNEL]

yb mid + L

[@LordVader066]

.

[@stickyfingersproductions6975]

Thank you Khan Academy! This helps me understand lots of math that confuses me. 😜👍🏻

[@ratiogod9158]

Thank this ratio

[@HaloFallxx]

I wish he was MY math teacher. :c

[@mrrainbow7349]

M & G I really HIGHLY agree

[@maxwilliams4807]

me too, i have an exam tomorrow and we haven't learnt a thing about ratios in class but my teacher thinks we have bfs, this is causing so many arguments lmao

[@yikezamv7850]

Same

[@killerkittygaming4365]

halofall same..

[@azada876]

yes pls

[@ivyguo4747]

This really helps me understand when I'm reviewing this after a year that I learned them! Thank you Khan Academy!!

[@ericataney]

This was so helpful, thank you! I wish my siblings and I had been taught this way in elementary school, and I wish this method of teaching was the standard/expectation for all math teachers! I did notice the error with the dogs to horses ratio, but despite that, this video was GREAT!

[@ratiogod9158]

Thank this ratio

[@Qyo-rc5fl]

@@ratiogod9158 counter

[@fishslimeball3254]

@@Qyo-rc5flW

[@zeeshan3216]

AlHUMDULILAH SUBHANALLAH I UNDERSTOOD IT BY JUST WATCHING IT ONCE . SUBHANALLAH KHAN ACADEMY IS REALY VERY GOOD PLACE TO LEARN AND IT DOES NOT CONTAIN ANY PAID VIDEO SO ITS THE BEST LEARNING CHANNEL ON KZbin

[@anastasiaanautodidact9856]

I wish khan academy would do ACT practice, topic-wise, like that of the SAT, because I'm literally plummeting and I don't have 1000 dollars to pay for for-profit educational organizations. I surely will be donating a lot to khan academy for their indelible efforts. What I like most about the khan academy practice questions is that they are topic-oriented and Don't seem to end. It would also be great if the programmers made a screen time restriction that you can freely adjust to prevent you from zoning out on your phone and kind of forcing you to finish the daily 120 questions. That would be a dream come true. I surely will be programming something like that for the ACT. It will be hard but worth it if it's going to help someone out of the trauma I'm going through rn, Being unable to find topic-oriented material.

[@luisj_jr07]

ratio

[@manowasim2743]

thanks helped alot in my exam studies

[@parnaviyadgire5149]

ARRRMMMMMYYYYYYYYYY!!!! 💜

[@thv_lvr]

Army

[@EshuNaya]

ARMY

[@cyberslash1921]

Army this ratio😭

[@RafidAhsanAnan]

I'm a college student. Jesus.

[@5millionsubsnovideos932]

u dont say.

[@horse433]

I'm a college dropoutnow lol I'm reviewing right now but I took the assessment and got high school math. I watched all these videos to to calculus and I got into calculus when I retook the test

[@cloggedplum5588]

Is it bad for me to watch this when I'm in seventh grade?

[@sanawal7211]

+Clogged PLum of course not!

[@edsasmr7340]

+Clogged PLum same

[@catgirlgamer101_9]

U made a mistake its 1: 2 not 1: 5

[@justbelowaverage0]

+CatGirlGamer101 _ he knows he even edited in a comment saying its 1:2 not 1:5

[@Bullfrog22]

nice pic

[@humairajahangir9782]

I know right

[@Who-Tf-Is-Travis]

You are right

[@njerimwangi2076]

well, man is to error...

[@rachelmcadamslover]

31 year old trying to take an lpn exam. God, I feel so dumb right now.

[@kytaylor3010]

rachelmcadamslover facts me to I’m trying to do CNA and take this darn test i failed it twice and have one more time

[@bellaofficial2957]

@@kytaylor3010 7th grader here doing online school :/

[@danielparvin9083]

Don’t think that at least you are trying and are committed

[@mrmagus4553]

You would be dumb if you didn't try to learn the subject. Stupidity is knowing you're ignorant, but doing nothing about it, while intellect is where you know you're unsure about a subject, but still try to accuire knowledge anyways. Whether the subject is complex, or basic, it's never dumb when you try to learn.

[@julianna6472]

I don’t even understand this type of math like lmao I feel so dumb

[@karanrathod9016]

i really really feel great watching this video he made it so simple I NEVER LIKED RATIOS but i am very confident fire a foundation GCSE question if you are dtuck when you come across one

[@all4honor]

Math has always been my Achilles heal. Now that I have time to myself and in my 40s I can sit down and finish this chapter during my freetime. I forgot how easy going your lectures and site is.

[@emeryrose5511]

studying for ISEE! so stressful, good luck on any test you have!

[@hanganee]

I never understood it and I'm writing a math exam tomorrow. Wish me luck🤞🤞

[@theyoshibrothers3305]

Wish this ratio luck

[@zaynfilms9534]

Hello All The People Here For Homework

[@aydnn7170]

+Ashlyn Hemingway im here because my dad put me here >(

[@alybugz6574]

heeeeyy

[@HG-qu5pi]

+Brody LS same

[@cloggedplum5588]

Heyyyy

[@michaelabird45]

sup.

[@buzzyt9890]

Ppl who disliked , they were soo happy that they understood this, that they started happy cryin OF HAPINESS AND ONE OF THEIR TEARS WHEN ON THE DISLIKE BUTTON OR THEY WERENT ABLE TO SEE

[@Thekingslayergames]

Sal I appreciate you taking the time out to do these videos. I'm relearning math, and getting more confident. Please do updates if you can when you make a mistake. That would be helpful in getting the logic of the math examples shown.

[@chomp_gd]

Ratio

[@glaciercodm4498]

12 year old comment .....

[@qbtcys4139]

@@glaciercodm4498 fr

[@nathanaellevi8320]

Didn't care + git gud at math + ratio

[@ANGELXZONE]

This is an amazing video, ratios are so simple. I wish teachers would explain it like this instead of over complicating the process.

[@ratiogod9158]

This is an amazing ratio

[@wishub]

@@ratiogod9158 counter ratio + L

[@frxkn6786]

@@wishub aired g

[@wishub]

@@frxkn6786 goku is stronger than naruto

[@frxkn6786]

@@wishub and?☠☠

[@Marcaronipasta]

Currently learning advanced math (for my grade), it really helps! It's going to be competitive in other schools if I make it.

[@yikezamv7850]

Now i know how to do i was stuck when is the mid test Thanks

[@aminazoi1079]

Helped a lot

[@gamewatch9967]

Not a real ratio + unfollowed + ratio

[@markasztalos9996]

counter ratio

[@theyoshibrothers3305]

@@markasztalos9996 L

[@arya3330]

It’s a helpful video, THANKS!

[@lhejein]

Thank you so much! This is really a big help!

[@esco7464]

Thank you 1:2 :P

[@NoTalking21]

you helped me pass a test thank you so much

[@alctraezali6776]

This comment is 4 years old hope you passed

[@jakeberry9931]

@@alctraezali6776 pass this ratio

[@floturqe5067]

thank you Khan Academy, now i can ratio people more effectively on twitter.

[@floturqe5067]

waiting for the first person try to ratio me on my first comment

[@pakaru1638]

@@floturqe5067 ratio

[@VinoProduction192]

@@pakaru1638 + bozo

[@glacialvitality]

get ratio'd bozo

[@floturqe5067]

@@glacialvitality you're edgy bro ngl

[@AzyAaron]

THANK YOU! You've helped clear that up :D

[@pojestz]

ratio

[@maryna.angelpa]

Thank you Khan academy, I am getting more interested in math. I stumble upon your channel last week and I am happy to know that I can learn math. I didn't have time to learn this on school but now, I want to learn more. I'm so grateful to have this channel more power!

[@mathslogic7769]

😂

[@ejsonmon]

Ratio then

[@lenispicker69]

@@ejsonmon fatherless behavior

[@fishslimeball3254]

@@lenispicker69 don’t care + ratio

[@lenispicker69]

@@fishslimeball3254 accurate pfp of you

[@themoneymo]

Thank you so much, this really helped❤️

[@meleika8274]

Thank you!!! Helped alot!!

[@carlamiu5060]

When you notice that he repeats almost everything at least twice it becomes a drinking game

[@betty6531]

That’s the best! My fav college professor(stats) has autism and repeated everything at least 4 times NEVER misses a step

[@unknownshadow4616]

It’s becuase he takes time to change the color and write so it ain’t his fault

[@StilesXIVx]

this really helped thanks!

[@avinashnc919]

all these other sites need money. this guy is ten times as good, and its free.

[@DJ-nomadlife]

Great way to explain thank you and by the way if you just prepare the question and write it down somewhere out of the screen before u start the video and paste later during the running time you save a lot of time .

[@pojestz]

ratio

[@NOODLEDOC1]

You are doing Gods work Sal. Thank you!

[@ratiogod9158]

Ratio bozo 🤡🤡🤡🤡

[@mikehunt4371]

@@ratiogod9158 own that fraud

[@katetyner8496]

Those 80 ppl who disliked either don't understand how AWESOME you are, or they accidentally hit the dislike button instead of the like.

[@josue_mejia]

kemmoperks Has happen to me xD Even on this vids. Try to go back and phantom pressed the dislike with hand interior

[@sinistresin]

now is more than 300... hate them

[@miababin7693]

kemmoperks you are right this guy is the best I love math not but this helps me so much I am in 6th grade I still don’t get it that much but with his vids it is so easy

[@miababin7693]

336 dislikes

[@kookiescookycookies9927]

@@miababin7693 yeah me too im trying to get my homework done in time these days😔

[@etarockmodest-anne5194]

Thank u so much for this it’s so so explicit

[@theepicduckk96]

This was posted in 2009 and it is still useful. Thanks!

[@boy-sb4ef]

Possibly because basic maths doesn't change much

[@leiahsworld3672]

this helped me with homework

[@marisolmusignac1667]

Thx this help me with my homework and class

[@alicedeanhera898]

Z000

[@fariha2011]

Wonderful explanation ❤. This helped my kid a ton. Thank Khan Academy 🎉😊.

[@user-gf5dp6wt5u]

You help me so much! I was struggling to learn it at school but you really explain it well!

[@pandabear087]

Thank you sooooooo much i love khan academy!!!!!!!!!!!!!!!!!!!!!!!!!!:):):)

[@AkashKumar-xu9ys]

Very well

[@rickytu5316]

I agree

[@angelaquarshie8559]

You made a mistake with your second example with the horses and the dogs The answer was supposed to be 1:2 Not 1:5 But I love your teaching ❤️

[@danielafari1017]

Very helpful!! everyone could learn something from him.

[@guypointingabananatohishea3092]

Learn this ratio.

[@ayomideadesina4055]

Amazing video teaches you a lot and learned a lot😃😃😃

[@bestsattips5245]

My channel!

[@adhityain]

Now you know what it is, take this ratio then.

[@silverust0922]

Thank you! this helped a lot!

[@pojestz]

ratio

[@sadiegracerogers2822]

I have to watch this for my test and today it a snow day! I am so over this day!! Love the video tho!! 🥰😍

[@ilhamanamazova1842]

Is it necessary that you should divide with the smallest number first?

[@poodoglemon]

Omg that helped SOOO MUCH!!!😉

[@hoorainsiddiquiii6535]

This helped a lot!

[@Shudikan90]

i learned more from this guy in 1 video than i would in 10 days of class.

[@Lumpify]

Learn from this Ratio

[@fishslimeball3254]

@@Lumpify W

[@Lumpify]

@@fishslimeball3254 no wya i forgot about this

[@aleczanderchamberlain2041]

as usual going over these concept helps, thank you :-)

[@memeboi-255]

Same

[@wishub]

Go over this ratio

[@lenispicker69]

@@wishub this is like the 3rd video you comment ratio find a job

[@wishub]

@@lenispicker69 how about you go find a ratio

[@tonyesq.8930]

@@wishub W

[@asmashheader7829]

Thanks khan academy you have helped me a lot with my year 7 maths homework

[@Serikokizu]

Thank this ratio😭

[@IMRONALDMCDONALD]

Thank you bro! Your a life saver!!!!

[@_Donut]

thank you so much, i passed my exam because of this video. i cannot thank you enough

[@pojestz]

ratio

[@fernandoarteaga4140]

Thanks really helped me out a lot. WHOOO!!!

[@Staint12]

Sal, u have help me a lot in math!!!! thank u and great video by the way. XD

[@arreymarinusarrey9264]

Give thanks to God

[@dolanduck7645]

What does this have to do with god?

[@sou_desu8587]

Rougher Than Knuckles Tougher Than Knuckles that khan exists?

[@roysourboy3640]

Jas 911 Maybe, who knows?

[@redcoin2249]

Jas Brw I hate when people complain about everything...

[@crimsonknight5575]

God is everywhere, so why leave Him out or ignore Him or pretend He isn't there?God gave you that brain, so make Him proud by using it wisely.

[@swissly6729]

5:44 So basically, if you have a two-digit number that is even and the second digit is zero, you take the number of which it is doubled from? So let's say 80. I technically have to use 4, correct?

[@memeboi-255]

Ye

[@kaus05]

Er no? Put 70 the common factor is 10 now but ig you already know by now so its for someone in the future

[@zoumm1004]

Thanks this helped me so much I got an a plus!!!!!

[@baksons]

You tech me more than all my teachers combined I LOVE your VIDEOS

[@pojestz]

ratio

[@JohnPaulBuce]

🐦: ratio 🤓:

[@sidhu7032]

Thank you so much for the proportion part, we were stumped.

[@EatenChiken]

Sal , I love you, you make Me Pass on My Math x)

[@shalinimalaviya5791]

Really helpful.. Thank you so much