Homework "help"

Daniel has already discovered that he can wheedle his way into getting me to help with his homework.
"I don't know how to do this, momma," he whimpers with those big blue eyes focused on me. "Will you help me?"
I usually just go over the directions and make sure he does the first one correctly before continuing with dinner prep. But then comes time to check the paper.
"Look at this one, this one and this one," I'll say.
He gets busy with the eraser and then works his wiles again. "How do I do this one?"
Usually, they are careless mistakes, so I get all stern and "you can do it" on him. But I know parents who hit their limit at about this point, and walk their child the rest of the way through to correct answers.
I'm still tough, though - if Daniel misses more than half of the problems on his first time around, I make an extra bit of practice up for him. (He hates it when I do that, but it's just the teacher in me.)
Here's my question: Is it more important to you to have your child turn in perfect homework - even if you have to provide some of the answers, or is it just important for them to have the practice and get MOST of it right on their own?
--Misty