Friday 30 March 2012

The Broken Calculator

Hello Maths Group,

Here is the broken calculator challenge we were looking at today. Can you find a way to make all the numbers from 1 - 20, using only the keys shown?

Good luck.

By

Mr. Bennett

Posted by at

4 comments:

  1. yeajin18 April 2012 at 11:28

    4-3is one. Easy! 4 times 4 is sixteen, and 3times4is 12

    ReplyDelete
  2. sharon18 April 2012 at 11:30

    yea jin well done but hmm oh! 3 times3 is 9

    ReplyDelete
  3. yeajin19 April 2012 at 09:57

    4times3is12,then add4, and add4again. Then it's 20!

    ReplyDelete
  4. Dunja19 April 2012 at 09:57

    I got number 5.
    4 x 3 = 12
    12 - 4 = 8
    8 - 3 = 5

    ReplyDelete

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