Quickly squaring a 2-digit number

Posted on July 1, 2010 by admin

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!

Duration : 0:4:45


[youtube _wjxgz6r-_U]

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17 Responses to Quickly squaring a 2-digit number

  1. runeplaya5 says:
    July 1, 2010 at 9:05 am

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

  2. neelmagician says:
    July 1, 2010 at 9:05 am

    thats really good. …
    thats really good. thanks a lottttttttttttt

  3. worldismine69 says:
    July 1, 2010 at 9:05 am

    relly nice dude

    …
    relly nice dude

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

  4. jmqff says:
    July 1, 2010 at 9:05 am

    …ah…this looks …
    …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.

  5. akshatmikku says:
    July 1, 2010 at 9:05 am

    fucking shit…!
    …
    shit…!
    this is simple(a+b)^2…whr a=50 and b=7…direct formula…!
    however shevko16 trick is nice

  6. Shevko16 says:
    July 1, 2010 at 9:05 am

    y not do for 57
    …
    y not do for 57
    do 57-50=7
    den half 50 = 25
    25 + 7 = 32 <—- first two digits
    den do 7 squared = 49 <—– last two digits
    den put dem together
    which equals 3249.

  7. iggy4323 says:
    July 1, 2010 at 9:05 am

    I hear you, vsimoul.
    I hear you, vsimoul.

  8. vsimoul says:
    July 1, 2010 at 9:05 am

    jesus! this is …
    jesus! this is standard multiplication ffs!

  9. themanfromthehouse says:
    July 1, 2010 at 9:05 am

    I’m sure i can …
    I’m sure i can afford a calculator

    and after about 5 minutes of learning something like this it actually saves time.

    im sorry i take back my last comment i was of that day

  10. just0that0guy says:
    July 1, 2010 at 9:05 am

    actually im …
    actually im Canadian and honestly using a calculator saves about 1 minute… so yea. what are you too poor to buy a calculator… im sorry

  11. themanfromthehouse says:
    July 1, 2010 at 9:05 am

    thats cause your a …
    thats cause your a retarded american

  12. just0that0guy says:
    July 1, 2010 at 9:05 am

    id rather use a …
    id rather use a calculator haha but this is a pretty cool trick

  13. just0that0guy says:
    July 1, 2010 at 9:05 am

    id rather use a …
    id rather use a calculator haha but this is a pretty cool trick

  14. littlemute says:
    July 1, 2010 at 9:05 am

    i like this …
    i like this interpretation of the FOIL method [a^2+2ab+b^2] it makes it look very easy
    i will find this very useful
    Thanx :P

  15. arkabc says:
    July 1, 2010 at 9:05 am

    Very cool! …
    Very cool! Something useful and easy to remember.

  16. brucebair says:
    July 1, 2010 at 9:05 am

    Really great info. …
    Really great info. Enjoyed it and better use it.

  17. jackcat1964 says:
    July 1, 2010 at 9:05 am

    brilliant!
    brilliant!