Sandy Wood
Brain Game: Math Square #40
by Sandy Wood - September 7, 2010 - 7:30 AM

bloghead_braingames.jpg

The nine white squares inside the main red grid should be filled with the digits 1 through 9. Each digit should appear only once in this main grid (the red square). One number is provided for you. Place the other 8 digits in their correct spots so that the mathematical equations work both across and down. IMPORTANT: Remember algebraic rules when solving the problems… multiplication/division should be performed in the first step, then addition/subtraction in the second. Good luck!

Here is my SOLUTION.

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Comments (6)

  1. Nice tricky puzzle today!

    posted by Jan on 9-7-2010 at 10:35 am

  2. The 58 made it easy– there’s only one way to get that using _ * _ + _.

    After that, everything falls quickly into place.

    posted by Dave Kirwan on 9-7-2010 at 11:17 am

  3. Sandy – I respectfully request that you no longer offer the Magic Square. I find that I have an OCD fixation with them. While if necessary I can set aside the other puzzles while at work until I have the time to do them, the Magic Square is relentless – it won’t let me alone until I solve it. Thank you.

    posted by tressel on 9-7-2010 at 11:45 am

  4. Dave,

    4 + 6 * 9 = 58
    2 + 7 * 8 = 58

    Also, there was some talk about making this interactive the other day and it got me curious, so i made this:

    http://mathsquare.heroku.com/

    posted by Rod on 9-7-2010 at 11:49 am

  5. I’m not saying this one was easy, but I still liked it better without the clue.
    :)
    @tressel: Do not speak of such horrors. No Math Square? Whatever will I do on Mondays?!?!?!?

    posted by Lola on 9-7-2010 at 1:00 pm

  6. This is the first one I couldn’t get on my own…I must be tired :(

    posted by Michele on 9-7-2010 at 10:48 pm

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