Tuesday 12 March 2013

Visual Multiplication with Lines

Today, we learnt an interesting way to multiply a 2-digit number by a 2-digit number. It works! What is the math logic behind this method?

Adapted from: http://www.math.hmc.edu/funfacts/ffiles/10006.1.shtml#
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8 comments:

  1. Unknown14 March 2013 at 21:09

    it's hard at first but when you try it it is really easy :)

    ReplyDelete
  2. Ms Zhou16 March 2013 at 16:15

    Yes, Michael. I agree with you!

    ReplyDelete
    Replies
    1. Anonymous17 March 2013 at 21:00

      But sometimes I did not really get the correct sum :(

      Delete
    2. Eaint Phyu27 March 2013 at 09:06

      It is easy . Bernice try doing it again

      Delete
    3. Ye Ye28 March 2013 at 16:24

      Yes,Bernice.Try again

      Delete
  3. Unknown28 March 2013 at 13:37

    ATTENTION PLS!CAN WE USE IT FOR 4 TO 4 DIGITS NUMBER?
    FROM:ANDREW

    ReplyDelete
  4. Malmino3 April 2013 at 05:05

    Maybe

    ReplyDelete

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