I believe learning mathematics is a more interpretive process than it is a concrete one. My grading methods are always evolving, but I try to allow students to express what they have learned in different ways and reward effort and thoughtful methods. I am somewhat forgiving when it comes to arithmetic mistakes, as long as they are backed up by or articulated with sound understanding of why the math works (or doesn't work).
I do not believe in setting curves and creating competition among students. Each student is expected to perform to the very best of his or her ability and therefore deserves to have their own work stand fairly and independently against the standard grading scale (see the current issues of the Student Handbook or Program of Studies), not against peers. Current grades are always available for viewing on Webgrades, so check there first for accuracy, progress, completion, or simply to satisfy your curiosity. Assignments are entered frequently, if not daily, into the system with accurate dates and scores. See the Course Information Guide for your specific class if you need more information.