Homework must be neat. Space the problems far enough apart so that the grader can find them easily. Grader time is a very valuable commodity--we cannot afford to waste it.
Homework turned in one class period late will be corrected and given full credit.
Homework turned in more than one class period late will be marked "L" and not corrected, but the "L" will be recorded, which gives you some credit.
Grades on homework are intended mainly for your information. They are
+ you seem to understand this very well
<check> you seem to understand this reasonably well
- you seem not to understand this
Homework does count in your course grade, but almost entirely on a basis of how many you tried, not how you scored on them.