Subtraction with Zeros

Directions: Use the numbers 1-9 at most once each to make this a true subtraction equation.
What is the greatest difference? What is the least difference?

Hint

What number(s) could or could not be be in the first box?
What strategies can help you think about subtraction?
If you found one way, are there other ways that also work?

Answer

1000 – 342 = 658 is the greatest difference
1000 – 658 = 342 is the least difference

Source: Ellen Metzger

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11 comments

  1. Help! Can someone please explain how to solve this problem. We are struggling to not use two nines. I know I have to be missing something but can’t figure it out!
    THANKS!

  2. We found 1,000-876 = 124

  3. Ms. Foley, you can’t have two ones in it

  4. I’m not sure if you can or can’t reuse the same numbers in the difference, but if you can then you could do 5,000 minus 367 equals 633.

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