When your teacher designates various various graded papers in one class, it can be difficult to keep track of them. If assignments come with different point values, each one will be worth a specific percentage of your overall grade. In that case, some assignments will count more toward your class grade than others will. Using addition and division, you can calculate the percentage you earned on a specific assignment, the overall percentage of the class grade that an task is worth and the percentage of the grade you have earned in a course.