Fractions in lowest terms | Fractions | Pre-Algebra | Khan Academy

Fractions in lowest terms

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Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!

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[cupcaakey]

I learnt this stuff in 4th grade but I forget how to do it every year so I come back to this video all the time lol

[urfaav_anabia]

Confused- I'm sure most of the people are watching this while quarintine.. o.o 😔

[twaeqnw]

Me watching this during a test that I've only have 10 more min it's to finish it 👁👄👁

[zandiaprice]

Find the highest common factor for both 48 and 64 and divide by the highest common factor! That's what I got from this video.
48 / 16 = 3
64 / 16 = 4
= 3/4

[shishicodm]

Who knew this will be so useful in a decade

[beanyys]

For anyone who finds this difficult, this is easy as walking(yeah).

You just need to get the GCD/GCF of the numerator and the denominator(the easiest method for finding is prime factorisation) and then you need to know that how many times will you multiply the GCD/GCF to get the numerator and the denominator. And that many times is the lowest terms for example:


33/88

GCD/GCF(prime factorisation)
33 = 3, 11
88 = 2, 2, 2, 11
Common divisor = 11

So
How many times 11 = to get numerator and denominator?

3 x 11 = 3(cancel 11)
8 x 11 = 8(cancel 11)

And you get 3 by 8 that's the lowest terms this applies everywhere. Hope this helps

[ashleyprice]

Thanks now he's distorting the galaxy

[omardib]

I'm in year 4 and my school watches you every day and are an inspiration to us

[agroed]

"Lemme make them a little more even." **makes them less even** :P

[euphrasiainjesia]

by any chance u are confused watch khan video comparing fractions then watch this video again

[itssam]

Who has to watch this October 2020 for school😒

[learnwithazmil]

for those who are confused, Find the HCF( highest common factor) of the two fractions. You can think which number would be the greatest factor or u can write all its factor. Example: 16/24. The highest factor is 8. (8*2=16, 8*3=24) So 8 is divisible by both 16 and 24 and it's the highest factor. So it will be 16/24 ÷ 8 =2/3.

[bhfrxo]

I think I'm lack of inteligent right now.But thank you for this now I understand.

[isabelleoldroyd]

Litterly saving my grade here thx <3

[danieloconnor]

thx khan!!! you helped me with my math homework!!

[hanahasan]

That was an excellent way to show the meaning of lowest terms

Thanks a lot

[mikasaanderensdaughter]

I'm still confused I watch it all over again and I'm still confused
Btw I need to finish my exam because tomorrow is the submission of the test papers
HELP!!!

[ryancarter]

Why would u divide it anyways tho? Confused

[guyofness]

wow khan academy is making me wonder...