How to Multiply Fractions - YourTeacher.com - Pre Algebra Help

For a complete lesson on how to multiply fractions, go to http://www.yourteacher.com - 1000+ online math lessons featuring a personal math teacher inside every lesson! In this lesson, students learn to multiply fractions by multiplying across the numerators, and multiplying across the denominators. For example, to multiply 1/2 x 3/7, multiply across the numerators, 1 x 3 = 3, and multiply across the denominators, 2 x 7 = 14. So 1/2 x 3/7 = 3/14. Students also learn to cross-cancel when multiplying fractions. For example, to multiply 3/5 x 5/9, the 3 and 9 cross-cancel to 1 and 3, and the 5 and 5 cross-cancel to 1 and 1. Therefore, 3/5 x 5/9 can be rewritten as 1/1 x 1/3, and multiplying across the numerators and denominators, 1/1 x 1/3 = 1/3.

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Education

Tags:

• multiplying
• multiply
• fraction
• fractions
• multiplication
• help
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• how
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• dividing
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• division

[Cat6768]

man i swear youtube has tought me way more than all my teachers ive had combined god bless youtube

[thenegativecreep69]

damn summer break made me forget all this stuff haha

[DamianKenny8]

wow i know how to do everything related to math in gr 8 ty so much it only took me a few hours studying this to know it all and half a year with my teacher

[maahachappi]

why so serious? ;)

[locoblinkz209]

man youtube teaches me more and my sister does teach me more than my teacher

[computergeeksmart]

@YahzB0Y please don't come here to curse. come here to learn. DUMMY.

[00Themoo00]

@YahzB0Y wow u have sum issues u need to go to some mentall instiute u fag..

[TheToaster101]

EXPLAINS SO MUCH!

[kkrsreeshi]

this really comes in handy when your just starting to learn math in English..... stupid french immersion..

[tylus101]

@thenegativecreep69 oh my gosh i have the worst problem with that ever

[Shackles87]

She sounds hella estatic about math..

[kaliumoh]

Ez as pie (yum pie).