Fractions - Butterfly Method

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[MathWizard]

Great video! I went over the butterfly method on my channel.

[XoIoRouge]

THE "BUTTERFLY" METHOD?? It's just called cross multiply, or "Finding like denominator" - I find VISUAL methods like this cheat the student out of actually learning why this works.

Cross Multiply method works visually, really well, but I've found people in COLLEGE who would attempt to cross multiply and they would put the first multiplication on the numerator and the second as the denominator, completely forgetting how it works.

I like to teach students the actual *reason* why the math works. We're multiplying both fractions by the denominator of the other fraction.

1/3 + 4/5 = (1/3)*5 + (4/5)*3 = 5/15 + 12/15 = 17/15

We can see the same math but this provides an actual *understanding* and that's VERY important in math.

[barberickarc]

What is so genius about this? You found the common denominator, but because there's a pretty butterfly this method is groundbreaking?

[akashgill]

Why ? I can do the same thing in same time with regular method. Common denominator and multiplying

[Andough]

1/3×5=5/15
4/5×3=12/15
5+12=17
so 17/15 or 1_2/15

[baldwiniv]

now please tell whaat to do when
we have 3 fractions in the question

[Ppw-gt]

Isme kaisi trick yahi to karna padta hai😂