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Quickly squaring a 2-digit number

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Uploaded by on Dec 10, 2007

This video will teach you how to quickly square a 2-digit number. With some practice you'll be able to square any 2-digit number in your head.

Check out http://WildAboutMath.com for more fun Math stuff!

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Education

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License:

Standard YouTube License

  • likes, 7 dislikes

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All Comments (23)

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  • Superfast

    

  • really super

  • This is the first squaring video I've watched that's actually worth it. THANK YOU! Oh, and death to expertvillage.

  • (50+7)^2=

    50^2+5*7+7*5+7^2

  • Sounds like nicolas cage!

  • kinda sad theres only these 3 vids from the site their really helpful

  • thats really good. thanks a lottttttttttttt

  • relly nice dude

    Can we make whit cube white 3 like this (45) cube 3

  • ...ah...this looks like the expansion of

    (a+b)^2, which is why that "2" appears

    in that multiplication 5x7x2x10 for

    the '57' example. A fun video, with

    pleasant, mellow speaking voice.

  • fucking shit...!

    this is simple(a+b)^2...whr a=50 and b=7...direct formula...!

    however shevko16 trick is nice

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