Division of Fractions Part 2

[LiustheLiar]

YOUTUBE TAUGHT ME MATH!!!! SUCK IT BOARD OF EDUCATION!!!

[binasheikh1974]

When doing a fraction division problem sum, how can we know which fraction comes first and which comes after the division sign? I understand that we have to invert the fraction AFTER the division sign, but I can't figure out which fraction comes first and which after. And if I don't know the rule, I'll get wrong answer. Example Cloth manufactures use a unit of measurement called a finger. One finger is equal to 4 1/2 inches. If 25 inches are cut off a cloth, how many fingers of cloth were cu

[northstar15]

@binasheikh1974 In this problem, you divide 25 by 4 and a half. It might help to change the 4 and a half to an improper fraction first, then change it back to a mixed number at the end: 25/1 divided by 9/2 = 25/1 x 2/9 = 50/9 = 5 and 5/9

[superkyle5100]

I WISH U WERE MY MATH TEACHER OUR MATH TEACHER SUKS!!!!!

[joselinlabonita]

thank u so much i was realy confused on a homework question and now i get how to do it =)

[CastleBeckettforevz]

Thx, i have a math quiz tomorrow so i needed that review.

[Ianisepic12]

thanks bro

[MultiRedhearts]

But how to u do it without the whole number??

[northstar15]

@MultiRedhearts I believe I have a vid on this--anyway, you will set up your problem horizontally, flip the second fraction and then multiply across: 4/5 divided by 1/3 == 4/5 x 3/1 = 12/5 = 2 and 2/5

[LimpTheBizkit11]

I love you, no homo.

[Regularperson122]

you>my teacher

[cponfantage12]

thankyou so much, you are a saint! im still gonna need to play this a few more times to get it, so sry if this video gets over a thousand views today lol

[northstar15]

@cponfantage12 thnx for the comment

[JCMOVIES100]

Thanks:) the vid helped me alot!!!!!!

[utube181099]

my mind = blown

[turtwig711]

i got a question, why simplify your answer???? does it matter if its 5/10 or 1/2

[northstar15]

@turtwig711 most teachers like answers simplified so I like to include this piece

[yomanwhatthefuck]

i just dont get it man i got the ged test coming up and i cant learn nething from the book, its like its all fine wen some 1 else is doin it make it seem so simple but then wen i go and try to do it i just dont understand how to do it god i wish i was smart, fuk this ged i wish i didnt need it,

[animalvidsforyou]

@yomanwhatthefuck My mom recently took the GED and passed, don't give up, I'm studying to take it next. My mom failed school and thought she was the stupidest person EVER. She didn't know ANYTHING, she thought she wasn't gonna pass. But she told me the book makes it harder than it is, they make you scard, its easy. Just try your best.

[skittles7343]

yay =) u teach just like my teacher

[Jskills4ever]

U helped me alot Thanks!!! , Now i will do good on my midterm lol

[JustPlainDorky]

you're awsome!!!! thanks sooooo much!

[RanoPK]

Mike i'm bit confused here. Why didnt you multiply 3 and 4 on both sides to get 12 as a common denominator ( at 1:14) and then have 252 over 12 and divide it further to have an answer 12? Please help.

[northstar15]

@RanoPK all I can say is to follow the method I use in the video--there are no common denominators when you multiply and divide fractions. After you change the mixed number to an improper fraction, and put the second number--the 3--in fraction form, just multiply across and simplify. You do not need to cross-cancel.

[RanoPK]

@northstar15 Thanks for your prompt reply. I thought we needed to have a common denominator even when we multiply and divide a fraction. i guess i need to subscribe lol. I could swear i have seen people mulitply and divide complex fractions with a common demonimator.

[RanoPK]

@northstar15 Ok sir your video which pops up next to this video on the right hand side " DIVIDING MXED NUMBERS" you have simplified the problem in a different way and that is why i got confused. I wish i could explain you any better.

[RanoPK]

@northstar15 One last thing i know i sound like the dumbest kid in the class but how do you know that we have to FLIP the second fraction ? what happens when we dont flip or whats the reason for it to be fliped? Is it a basic knowledge that one has to flip the second set?

[northstar15]

@RanoPK This is a really good question and one that I do not explain in the video. We flip the second fraction because we are changing the operation from division to multiplication. Since we change the operation, we have to use the reciprocal of the fraction, in other words, flip it.

[OMGsoFUNNY1]

I AM DEFINITELY SUBSCRIBING MAN!

[shadowdudeable]

thanks

[michealsofresh12]

tnx i am gonna Ace that test

[Commander359]

thats dude



[homerun0508]

THANK YOU!!!

[MsEden34]

you have one great marker there

[coolman36869]

huh????????

[Justinbieber0053]

YOU ROCK! MY MATH TEACHER DOESN'T EXPLAIN WELL BUT U EXPLAIN SO GOOD THANKS! :)

[sk3l3t0nk3y9090]

semperlover101 then u just multiply across

[gurla1]

thnx u saved my life!!

[semperlover101]

Wait, so what if u CANT cross cancel?? Like 3/5 divided by 7/8??? Please respond!!!

[northstar15]

@semperlover101 cross-canceling is just an option; it is not necessary. if you can't do it, then get your fractions into proper fraction form; then flip the second fraction and multiply across, first the numerators, then the denominators; but you MUST make sure to simplify your answer at the end, if necessary...please subscribe if you have not already -- thnx!

[TheYellow101]

dam i wish u were my math teacher ur awsomeeee!!!!!

[IcePrincess619]

@TheYellow101 i know i wish he was my math teacher too! haha but i guess he can be, Just watch the video :] He kind of IS already haha :]

[BobbyRoxUrSox33]

thanks man I have a math final tomorrow and you just saved my life

[northstar15]

@BobbyRoxUrSox33 thnx 4 this nice comment...

[jaketherake20]

You have good writing and thank you so much!

[texholden]

I have posted this and other videos like it to my site ww newteacherhelp ws

[mali9786]

thanks alot

[idesignandcreate]

Thanks