# Math Help - Addition

Here's a question I've come across and I am stuck...

The questions goes like this (even though there are no six in the question which puzzles me)

Replace as many of the digits 5, 6, 7, 8 with a zero as are necessary to make this addition correct.

555
777
888
999+
___

1111

This is my attempt. I guess, 9 cannot be made zeros, (as question doesn't mention it) so I did this but it's not correct.

005
007
000
999+
___

1111

Any help would be very much appreciated... Thanks

2. ## Re: Addition

Hey Natasha1.

Can you replace anything with a zero? If so why is your answer wrong?

3. ## Re: Addition

Because it does not make 1111 what I did.

The question is this Replace as many of the digits 5, 6, 7, 8 with a zero as are necessary to make this addition correct. (but what I don't get is that there are no 6 in the addition given and we are not told we are allowed to touch the 9)

So I am stuck...

4. ## Re: Addition

Sorry: for some reason I thought it was OK (just having a bad day).

Try this:

055
077
880
099
___
1111

5. ## Re: Addition

Assuming we are allowed to change a 9, which is not mentioned in the question then that would work. Thanks for your help!