How Do I Assign Credits if the Course Was Not Completed?

You can generally assign a credit based on the percentage of the course completed and the credits earned. For example, if the student completed 1/2 of Precalculus, which earns 1 credit of Precalculus with Trigonometry, you can give .5 credit of Precalculus with with Trigonometry. 
 
See: How to List Shormann Math Credits on a Transcript