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?

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

1000 – 658 = 342 is the least difference

Source: Ellen Metzger

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!

I start figuring number with the thousands first, then hundreds and so on. I considered if I would need columns to regroup. Got I right away to exactly 10,000

3749 + 6251.

We found 1,000-876 = 124

You have a one in the subtraction and a one in the answer. :/

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

1000 – 876 = 234