Adding Fractions Shortcut

[SuperBRIT11]

Thank god i watched this video even tho i learned this in like 4th grade i forgot and not i no thanks :)

[RedHawkProductionz]

i have a test on 2/21/2012 and does this really work im in 5th grade and these fraactionz are a pain in the but

[northstar15]

@RedHawkProductionz Yes, this method works, but still check to see if you need to simplify at the end; this is actually a technique used in Vedic math and is reliable.

[XxNHLGAMER88xX]

thanks this helped alot :)

[just2envy2]

jenius



[itchigo3245]

just to make a point, 22/15 and 1+7/15 are two ways of writing the same thing, putting it in a mixed number notation doesnt actually make it any simpler

[10000CookiesforPanda]

Can it be both improper and mixed number? Is that kind of the same answer? Or should you put both just in case?

[northstar15]

@10000CookiesforPanda To simplify completely, you cannot have a mixed number with the fraction part being an improper fraction.

[AreYouKenneth]

1 + 7/15 notation should be more clear than 1 7/5

[abbzney101]

is it the same for subtracting fractions ?

[northstar15]

@abbzney101 basically--watch my vid on Subtracting Fractions With Unlike Denoms...

[744sayed]

we just look for the low common multiple (LMC) like (LCM) like the lmc for 3 n 5 is 15 cuz look

3,6,9,12,15,18,...

5,10,15,20,....see there are 2 same numbers ----> 15 so 15 is the dinominator

for numerator we just do this

2/3 we times(x) 3 by 5 = 15 and do the same to the numer\tor which is 10

and thn for 4/5 we times(x) 5 by 3 which is 15 thats the dinominator btw, and the numerator we d the same so 4 times(x) 3 = 12

and then at the end we just add them like 10+12= 22 .......22/15 dune.

[LaDiiGiggleZ718]

how did you get the 7? What you mean by left over >?

[hpdragon723]

Good shortcut! I like this method.

[jollytollie624]

well um you helped me in one part.... but now... how do i subtract!?! XD darn...

[LEELISA1014]

wut if there are sum whole numbers? i tried using this method to do 3 1\3+2 4\11 but im having trouble :\

[northstar15]

@LEELISA1014 you must first convert the mixed numbers to improper fractions for this method to work

[ck260594]

i dk how other countries learn fractions but this is what i was taught since primary school. IMO it is a common way

[shangshangcute]

It only when when the denominator is 5

[shangshangcute]

how about 3/6 + 4/10? it does not work in all number

[northstar15]

@shangshangcute it should work with all proper and improper fractions. But here, you can simplify both fractions first, because both fractions have even numbers. So it becomes 1/2 + 2/5. Now, when you work out the problem, you will not have to simplify at the end. Your answer will be 9/10. Try it.

[haaahaaai]

@shangshangcute i think its 6/30 

[haaahaaai]

@shangshangcute i think its 6/30

[itaty22]

@shangshangcute then it will be 3/6=30/60 + 4/10 will be 24/60 then 30/60+24/60=24/60

this is how we do it at my school in the 6 klas

[zane757]

This works all the time?

[northstar15]

@zane757 it should

[captianamazing1]

This just made my life easier

[northstar15]

@captianamazing1 great...

[lowmax64]

It's easier for fractions with smaller numbers.

[vivianpopdiva123]

this helps me alto! this is way easier !

[jimmuhlhauser]

I love you Northstar!

[magnet521]

I think it was very good.Nothing was bad about it.

[kevin94565]

AWSOME VID!!!!!!!

[26chickensslycooper]

cool! The quality is also good.

[northstar15]

Thanks so much for this feedback. It is hard to see how it looks on the other end.

[idesignandcreate]

Thank you! Such an easy method compared to what I was taught.