NOTE: This answer applies only to those using a SCORM-enabled implementation of our Math courses, Algebra 1 -- An Open Course and Developmental Math -- An Open Program.
The most likely cause of this problem is that your SCORM objects are set to the wrong type of scoring option. You should set all SCORM objects to "Highest Grade" and then set a point value. In most LMSes, you will have access to an editing or updating screen for each SCORM object where you can set the point value and scoring type. In some cases, this can be set globally when you import or restore a course. Check your LMS user guide or support area for additional assistance.