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Sandy
Brain Game: Add It Up
by Sandy - August 28, 2008 - 6:30 AM

bloghead_braingames.jpg

Once kids learn how to count, the next logical step is learning how to add. Youngsters have a built-in knack for this, quite often, as they (like the rest of us) want to accumulate as much as possible. “It’s all about the toys,” eh?

Using only the same digit eight times and
some combination of addition (plus signs),
come up with an equation that equals 1,000.

HERE is the answer.

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Comments (9)

  1. done with ease - 888+88+8+8+8=1000

    posted by Ian on 8-28-2008 at 7:47 am

  2. Argh! I didn’t follow the directions carefully. I spent 10 minutes driving myself nuts. I was trying to creat 8 different combinations that add up to 1000. I.E. 888+88+8+8+8+8+8+8. I saw I hit a thousand, but then I passed it!

    posted by Marty on 8-28-2008 at 8:03 am

  3. grrr…why do Always do things the hard way. I was thinking

    2(22^2)+2(2^(2+2))=1000

    Except for the parentheses, it can be written in longhand without any mathematical punctuation.

    posted by econgineer on 8-28-2008 at 10:15 am

  4. Whoo-hoo! I got it!

    posted by Johnny Cat on 8-28-2008 at 10:30 am

  5. I misread the instructions at first, too. I came up with 33+33+33+(3/3)=100. I was a little discouraged when I saw I had to get to 1,000, but I did get it right before I looked at the answer!

    posted by PuzzleScott on 8-28-2008 at 12:01 pm

  6. Either way too easy, or my brain actually fired up today… Naw… Just way too easy….

    posted by Vickey on 8-28-2008 at 12:18 pm

  7. How about 1111 - 111 = 1000 where the minus sign is a 1 turned on it’s side? No plus signs required

    posted by stuart on 8-28-2008 at 12:47 pm

  8. Stuart–you only used (7) 1’s, not 8. I had figured it with 8, but did it this way:

    1111 - 111 x 1 = 1000.

    Clearly superior solution to the 8’s since it uses fewer operators ;^)

    ReCaptcha gr, heinze (Obama’s ketsup brand?)

    posted by Chan on 8-28-2008 at 1:14 pm

  9. I thought it was a little more tricky and I keyed in on the word equation. I used only 1 digit 8 times, but came up with 5x+5x+5x+5x+5x+5x+5x+5x=1000 and x=25. I only used the same digit but added a numeric! Oh well… I thought it was clever.

    posted by jason on 8-28-2008 at 1:58 pm

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