When grading finals, the correct answer to a question was 1:4. I had a student write 1:8 and I marked it wrong. Afterward ,the student came to me and said that the 8 was actually a 4 and he just wrote his 4s (haha - is my apostrophe use correct?) really messy. I said I'd look at it and get back to him. I've compared the way he's written 4s on other parts of the test and even on other papers, but they never seemed that ambiguous before. I want to still count the problem wrong as it sure looks like an 8 to me, but I'm afraid he's going to question me again and tell me I'm wrong. Honestly, the few extra points on his final is not going to change his semester grade one way or another as we grade by letter grades and he's a pretty solid C. Should I give it to him, just to not cause more trouble, or should I tell him he needs to write neater in the future and still count it wrong?