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Sums to 100

Directions: Create the closest possible sum to 100 by filling in the boxes using the whole numbers 1-9 no more than one time each.



Can you give me 3 numbers that add up to 100 (any number could be repeated)? How can we use this to fill in the boxes using each digit only once?



Multiple solutions


Source: Graham Fletcher

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Close to 1000

Directions: Arrange the digits 1-9 into three 3-digit whole numbers. Make the sum as close …


  1. 49 + 32 + 18 = 99

  2. Our answer was 29+18+53=100

  3. I had a lot of fun with this challenge and passed it along to my family when I couldn’t figure it out! Looking for more of these challenges in the future!

  4. 23+56+18=100

    If I can get my students with behaviors to do this at 3 or upper I will challenge them to do this during morning warmup.

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