Multiplying & Dividing Fractions and Mixed Numbers

[Thkmra]

When multiplying mixed fractions, so many simply multiply the numerator?

[mbrandl11]

@Thkmra

The easiest way to deal with mixed numbers is to the convert them to improper fractions and then you'll be able to simply multiply across on the top and bottom.

I hope that helps! :-)

[liham1000]

@OmucuOsul yh wouldn't mind him ending his streak but can u imagine if cena done it -_____-

[fucksocietyeatcandy]

thanks it really helpled!

[noahloveslegos1]

Cool thanks it helped

[TheBORNTOBEHAPPY]

Hahaha You cheater

[TheBORNTOBEHAPPY]

Wrong ROFL Result

Joke

I'm lovin it thanks

[MamaOv2Monkies]

thx soooo helpful :)

[MamaOv2Monkies]

My kids are doing Life of Fred math, and Fred seemed to skip this very important info...

Thank you!

[FRENCHYMAN1081]

MY BRAIN HURTS!!!!

[azzure33]

Bro thank you sooo much I have a test on Monday and I didnt get any of that but now I do thank you so much my mom would kill me if I failed I think you should say and thats how I mix my #'s

[shadowmark1000]

TY DUDE LIKE FOR REAL U JUST SAVE ME FROM ALMOST FAILING I HAD A TEST AND LIKE 80 OUT OF 100 QUESTIONS WHERE OF THIS U JUST SAVED ME TY SO MUCH :D

[colombian352]

say practice make perfect at the end lol

[j0mezzy]

Why dont we CROSS MULTIPLY ? on the first problem ?

[mbrandl11]

@j0mezzy

We use cross products to solve proportions. This is just multiplication of fractions.

If the problem were 7/9 = x/27, we could use cross products to solve for x.

I hope that helps! Keep working hard and asking good questions! :-)

[kiwibirdchannel]

@j0mezzy  it's called cross cancel

[electricmoo88]

actually, you make a lot of sense! i actually learned more here than i did in high school lol

thanks!

[dayofthehippo]

thanx... i was helping my son... and could not explain this clearly enough!

[0323jessie]

Thanks!!! You did an Awesome job at explaining the work! I really needed this to refresh before taking the cpt!!!

[mbrandl11]

@Lokitty11

How so? What is giving you trouble?

[silentslayer911]

Thanks Very helpful

[VALLEYFLIONS]

thanks for help

[bloodthirst49]

thanx

[MartyHoward]

Thanks for the video man!

[Phantom9442]

Thank you very much! Helped alot :)

[santinowong]

Something Cool to say at the end of the video " It's Always a numbers game"

[seen206]

thank you so much.

[Mikec19]

Mann...where was youtube in the late 90's when i was goin through elementary school!!



[tvmaster619]

Thanks for the clear and concise directions on how to multiply and divide fractions. I am 41 and have just returned to school and have shed many tears over the teach yourself math sections!!! Thanks to you I don't think I will have to shed quite as many!!

[Mastersaofan]

im 20yrs old and this refreshed my memory wonderfully thanks!

[MsBubu900]

KFC...hmm

[alphonso0206]

AWESOME! BY THE WAY, DID U FIND ANYTHING TO SAY FOR YOUR ENDING OF EACH SESSION? IF NOT, JUST SAY UNTIL NEXT TIME I WILL B CHUCKIN UP MY DUECES. :}

[alyssa7802]

Thanks for this vid my teacher gave us hw on this and we learnd it at beginning of school year. She said we had to figure it put ourselves.

[mbrandl11]

@alyssa7802

I'm glad you found it helpful! :-)

[felipacar74]

"Math's all folks" How about that for your end. Thank you for giving step by step instructions.

[felipacar74]

Math's all folks; how about that for your end. Thank you gave step by step instructions.

[JoeyMacaroniPenguin]

Mats videos on youtube are really helping my revision

[hamad109]

thank you very much for this lesson....you helped me to understand it

Keep on

from SA 

[UBUCKSHOT]

TUNE IN NEXT TIME POWER TO THE KIDS!

[41Mandalorian]

Man! You are so smart. My teacher made this so confusing and I couldn't understand it. Thank you so much!

[SoutheastBluesMan]

I don't know about a "sign-off" at the end of each video, however I thought it would add a little humor if after each problem when there's a little silence... fill it with crickets chirping. That would be perfect! Oh yeah, love the help. I'm trying to get back to basics as I'm starting college soon. Yep, I'm 36 years old; about time, I guess. Just remember, Crickets... and maybe fade into some Stevie Ray Vaughan at the end. See ya, Sam

[HawxTeamDelta]

gracias

[ty1one]

ok ok i was wrong tnks and keep up the good wrk.

[ty1one]

im sorry but that last sum is wrong u have to use the sign -25+2 is 23 not -27 ok so plz correct that tnks.

[mbrandl11]

@ty1one That's a common mistake, we don't want to take into account the negative when converting from a mixed number to an improper fraction unitl the end. Here's an example: -1 1/2 We want to convert it to an improper fraction by your method we would have: (2)(-1) + 1 = -2 + 1 = -1 So the improper fraction would be -1/2. We had -1 1/2 and now it's just -1/2...?? Instead, we ignore the negative until we track it on at the end. (2)(1) + 1 = 2 + 1 = 3 Our improper fraction is: -3/2

[RedSnippet]

i really appreciate this video, i am getting ready to take a college prep test and i completely forget all my basic math. you are a lifesaver.

[E3MusicTV]

THANKS ALOT!!!!!!!!!!!!!!!!!!!!!! :) YOUR GREAT

[snailhead456]

you make learning math easier than my math teacher does. And she has been awarded math teacher of the year award.

THANK YOU SO MUCH!!!!

[taocircle]

Think about the great minds that put this all together. Sad of what we are doing today with our time (me being one of them). If they could devise this whole procedure of mathematics back then. Imagine what we could do today without all of this celebrity idolizing. I came back this way because I am doing a lot of IT certs ( age 39) and was upset with myself when taking an entrance exam. Now even more pissed that this is what I forgot how to do (procedures). Thanks for the video, great job!

[1996Miguel1]

thank you so much!!! i have my math final tomorrow in freshman math and this really helped me!

[snookiecookie1998]

Thx so much! I have a math test tomorrow and my teacher just rushed us through the chapter so i didn't understand it. But now I do and I feel ready for the test tomorrow! Thx again! :)

[GraciemaeRose]

thnx...u helped me lotz !!!

[TheShayandJ]

thaank you this helped me alot ;D

[JewelsFromVenus]

thank you veyr much Sir.. I need to keep my math skills sharp for nursing school.. I wont forget the KCF for dividing and I think at the end of your vid you could say " thats my story and im stickin too it! " :)

[Gallagher101162]

good vid makes the process doable but I don,t understand the theory of how multiplying fractions become smaller and dividing makes fractions bigger, this is not logical

[girlsLIKEchocolate]

Omg, life saver!!!!

[WannaBthatSomebody]

Thank you so much! My college prof. just sits in his chair and talks use though it and then expects us to understand. I wish he would write it out but everytime we ask he gets annoyed and sighs!

[rinabros]

wow thnx totally needed this cz i 4got about this lesson hahaaahha im so dumb at math but thnx for helping

[OfficalReneesmeBlack]

thank you u helped me on my homework!!!

[Vamp1963]

Mbrandl are you teaching maths in school?

[mbrandl11]

@Vamp1963

Yes, I am a math teacher. :-)

[ernaerin]

I always say to my students, "And that's all, mathematicians!"

[lilgool2345]

Thank you! I have a exam today for tutor , and i didnt know how to do it cause i came in 2 weeks later. So ty! ^^

[northbeachfilms]

Super fantastic! Thanks so much

[livebythefly]

thanks for your help. I am getting ready for the GRE and got stuck on fractions!

[MrRandohlf]

thanks, it helps

 me a lot!

[AkiraDays]

Of all the videos that I've seen, this is the best one, I really like the way you explain, very simple and easy to learn. Thank you very much for posting this video!!!

[GhanaiianChickStarh]

OH THANK YOU ABOUT THE KCF,

THIS HELPS ALOT , HOPE YOU GET LOTS OF SUSCRIPTION =)

[GhanaiianChickStarh]

Thank you so much,

&Now I have to face an end of year test. =/

[aus824]

thanks have a final and this helps a lot

[aus824]

thanks have a final and this helps a lot

[15551cue]

this is proof the internet can be used for good instead of evil

[thegilkey23]

thank you u were very helpful i forgot how to do all this from highschool and needed it for college so thanks again

[DLBmedia]

Thanks alot for making this vid, appreciated :)

[TurboIX]

Thank you for the video. I need to learn all this stuff and more for a test and these videos help alot.

Thumbs up.

[CreateStatic]

Here's your're line. "This is mbrandi saying thanks for tuning in to math makes sense" Don't worry, I made it up:) Or "thank's for tuning in to midnight math". get it? lol. That was a joke:/

[mbrandl11]

@CreateStatic

Thanks for the suggestions! I'll keep them in mind for my new videos. :-)

[RammaRITOORITO]

just became better in math!!.

[talkingid]

i am soooo ready for the state

math exam

[Rhawneld57]

I am 33 years out of school and I was shocked that I couldn't do fractions any longer. out of sight out of mind so to speak. I enjoy your videos. Thanks. Also you asked for a suggestion as to how to end the video.... Just say "I hope you have learned something and if you have further problems Keep watching. Thank you"

OR Till next time when we solve another mathematical problem, this is me thanks for watching. That's it. LOL

Good videos thanks a million.

[mbrandl11]

@Rhawneld57

Thanks for the suggestions! I'm glad you found the videos helpful! :-)

[coolman36869]

@Rhawneld57 wow ur smart

[xXpaintjobXx]

Thank you sooooo much! i have a test tomorrow and i realized that i had left my math text-book at school :P thanks so\o much

[pyrodeathphantom]

um th last problem is wrong dude. the answer is 1 and 9 14ths not what you put cuz when youre making the mixecd number a fraction 5x-5 equals -25 when you add to a negative it goes tword zero wich is down so -25 + 2 equels -23.

[mbrandl11]

Careful! I explain that part at about 6:15 in the video.

We don't take the negative into acccount until after we've changed the mixed number into an improper fraction.

If you don't believe me, try converting your improper fraction back into a mixed number:

-23/5 = -4 3/5 which isn't what we started with.

[pyrodeathphantom]

@mbrandl11 oh thanks my fault didnt watch that part

[BlazikenIsRad]

Omg! You're a genius!Thanks so much.

[mzundastood081]

very helpful...............

[BabyGurl90519]

thankyou.diz is qoin 2 help meh on math nd make meh understand it more

[redzwife]

I'm refreshing for nursing school, and I was completely lost until I watched this. Thank you so much.

[shitshingle]

THANK YOU!!!

its been a long time since i've done this, but it came back to me after watching this...

[barbiehasdoggybreath]

Just shared this with a student I'm working who's still waiting for the college bookstore to get a copy of the textbook he needs. It helped him keep current on the material they've already begun studying. Thanks!

[ajbalagtas]

thanks man, that really made sense to me....thought id freshen up before i enroll for college.

[Danyo151]

on the first problem, how come the 9, cant become a 1, and the 27 become 3?

[mbrandl11]

Because they are both on the bottom. We can only simplify like that when one is on top and one is on the bottom.

If the problem were (9/11)(2/27) then we could simplify like you mention.

Good question! :-)

[markzb13]

how come in the first one you didnt change the multiplication to division???

[mbrandl11]

Because we can multiply fractions directly, no changes are required. We just multiply straight across on the top and bottom.

[madpyroman]

hey thanks i was only looking into the dividing and i copied both dividing ones to help me understand my homework thank you so much!

[kutthroat84]

this is great... i've been out of school for 10 years and this really helped remind me of the stuff i learned when i was 16

[blueyedemo6]

me too , this vid was super helpful! I actually get math again :)

[HEMPNITIZE]

hes using a calculator

[AZFoodDesign]

haha KCF-KFC!

[lovelysea123]

Thank u so much

[DAVID52956]

HOW ABOUT SAYING,'KEEP THE FAITH'.

[lipglossxoxo1]

this really helped on my s.a.ts thanks

[ashlioffical]

yeah i'm back.......

yay i have a test to fail in the morning

[sk8ergirl142122]

wow i needed this! lol thanks sooo much you explain it wayy better than my teachers!

[khirschberg]

Thanks so much, you really helped me remember this stuff! It's an awful feeling getting your Master's degree and forgetting something so basic after not using it for 5 years!!

[djprototipo]

thank you man im finishing my high school and they give me this class thank you

[ashlioffical]

i hate 9th grade this in my first time taking it but like my teacher says "third times the charm"

[karolinesworld]

thank gosh for youtube tutorials.

<3

[Idn42]

Yeah I have to do 100 of the divisions good thing you were there

[squirrel3d3]

thanks

[ThePoeticAngel]

thanks you so much. I've forgotten how to do this and I'm going back to school soon but now that I saw this video I know how to do this. :)

[CityprettyMovies]

diddo

[jmar0015]

crap i totally forgot how to do this with all these pre-cal classes.. but now im okay.. thank you its amazing how you can forget the simplest things..

[cardmasta360]

oh man i really need this thx

[jborozzi]

i went for the first time to take an adult diploma class because i dropped out of school in 9th grade i failed it because of the fractions the lady said. I am going back on wednesday and i feel quite confident now thanks to you! ;) thank you so much god bless.

[OMGiheartJuicy]

Dude! Awesome! I'm in Pre-algrebra for Math-u-See, You totally helped me! I had like 10 of these and I only got 2 right! Your not a goof, Your a genuis!

[ambspier]

THANKS!! i failed a quize and i have 2 make up 4 it and i needed help. thanks again

[naruto446475]

Hey Woop There IT is !!

[cedar688]

hey man, dont feel like a goof. your doing a great thing. thank you. you could leave us with:

Bam!

Next time

Later

you could do counter cool, which is actually cool when you consider that cool is necessarily competitive. in that case, "im atta here" works. thanks for watching is pretty safe.

if your going to do cool, just do it as goofy as you can. you actually have to play the part.

thanks again

[mbrandl11]

Thanks for the tips! :-) I'll keep them in mind for future videos!

[ckyhp]

hey man thanks

im taking my 7th grade placement tests and we didnt learn this , it helped alot !

thsnks!

[eminemfactor91]

thanks alot man. im 17 and im taking my ged test next week and this is helpin me out alot and helpin me get my mind mathd up lol

[anais1447]

Thanks so much. I was having a hard time with a question and I was trying to google it but noone had any reliable sources.

Thanks your video was helpful!!

[cedar688]

i agree. when you google, your asked/expected to pay for the knowledge, as if sharing, and appreciation from one and other is unrealistic. kindof gay and greedy.

[mbrandl11]

I agree.  I'm happy to share what I know. After all, I didn't come up with it myself, someone taught me and the least I can do is share that.

[LewDaCrys]

I needed to see this again because I forgot how to do it. Thank you!!!! =)

[bshalinwaites]

ur awesome keep up the good work really helpful and simple and I'll think of something cool to say

[grassassdude]

VERYYYY HELPFULL :)

[aamablu]

thank you so much I'm in college and i forgot how to do this

[JonathanChung888]

hey um do can you simplify the same number more then once with another number?

[mbrandl11]

Do you mean something like this?

12/24

We can divide by 2 on the top and bottom to get: 6/12

We can divide by 2 again to get: 3/6

Now we can divide by 3 on the top and bottom to get our simplified answer of: 1/2

In that example, we divided by 2 three times! A fraction is in simplest form when we cannot divide by the same number on the top and bottom of the fraction anymore.

[JonathanChung888]

thank you =D

[losrockets4]

on the third 1 u did towards he end of that prob lets say my awnser is 18 over 250 can i turn 18 and 250 into a mixed number by pulling 13 18s out off 205????????? please msg me back thanks

[mbrandl11]

If you have 18/250, it isn't an improper fraction. You could simplify it by dividing by 2 on the top and bottom to get 9/125.

If you have 250/18, you can take 13 18s out to get 13 16/250, which can be simplified by dividing by 2 on the top and bottom to get: 13 8/125.

I hope that helps! Good luck! :-)

[60708]

What do you do when the new fraction you get after doing the KCF are divided amongst each other equally???

[mbrandl11]

Do you mean if you get something like (1/3)(3/1)?

[60708]

yes

[mbrandl11]

You can either simplify and end up with 1/1 = 1, or you can multiply across on the top and bottom and get 3/3, which simplifies to 1.

[60708]

ok i think i get it now

[javi1534]

thanks./.. i understand it now.. is not as hard as i thought..

[xsweetxsugax]

Thanks!! that woz relii gd u taught it relii well thanx agen!! i understand it nw

[buckeye53524]

Thanks!

[ogop79]

Thanks !!!!!

[grytestriped]

very cool. thanks.. BTW you sound super HOT!!

[destinydiamondcrown]

You are fantastic I love it