Sandy Wood
Brain Game: Math Square #5
by Sandy Wood - November 30, 2009 - 7:30 AM

THE SOLUTION:

mathsq-05-a

Pages: 1 2
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Comments (4)

  1. Not sure why, but I whipped right through this one. The instructions should say that the 9 is provided, not the 2. I like it. Keep them coming.

    SANDY’S NOTE: Thanks for the heads up, Nick… I’ve corrected the instructions to refer to the “2″ instead of the “9.”

    posted by Nick on 11-30-2009 at 11:25 am

  2. I think it’s because there’s only one solution (utilizing the 9) which can be figured out right away. It cant be 5 x 9 + whatever because that’s already more than 42 (and therefore it’s not 9 x anything larger than 5) and it can’t be 3 x 9 + whatever because there isn’t a large enough digit to add to 27 to get to 42, hence you’re left with 4 x 9 + 6 = 42

    posted by darek on 11-30-2009 at 12:35 pm

  3. Eggs-Cellent

    Keep em coming.

    posted by Ian from Baltimore on 12-1-2009 at 9:29 am

  4. That seemed really easy this time around….I liked it, lol. I started with the 28, and guessed that I was going to divide by 2. So then it would have been 7 and 8 in the other squares, and somehow I managed to put them in the correct spots right off the bat. Thanks Sandy!

    posted by Carol on 12-1-2009 at 9:46 am

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