Adding earned marks and possible marks is sensible when all marks contribute directly to the same total. It can be wrong when the syllabus gives assignments, quizzes and exams separate course weights. Before calculating, look for the official grading rule: the correct method comes from that rule, not from whichever number looks higher.
When raw marks should be pooled
Suppose one test is 40/50 and another is 18/20, and every available mark contributes equally. The combined score is (40 + 18) ÷ (50 + 20) = 58/70 ≈ 82.86%. Averaging 80% and 90% without considering their different maximums gives 85%, which is a different question. Use the Marks Percentage Calculator for one raw score, or total the compatible marks before entering them.
When the syllabus assigns weights
Suppose assignments count for 40% of the course and exams for 60%. If assignment performance is 90% and exam performance is 70%, the course grade is 90 × 0.40 + 70 × 0.60 = 78%. Pooling the raw marks would be misleading if the number of questions differs from the assigned course weights. The Weighted Grade Calculator shows each category’s contribution.
Work backward from a target
If your completed coursework represents 70% of the final grade and your current grade on that coursework is 80%, it contributes 0.70 × 80 = 56 points toward the course total. To finish with 75% when the final exam weighs 30%, you need (75 − 56) ÷ 0.30 ≈ 63.33% on the final. If the exam allows only whole marks, round to the next score that actually reaches the target. Check the Grade Needed on Final Calculator with the course rules.
Some courses require a separate minimum final-exam score, cap resit grades or round at a particular stage. A mathematical course average does not override those requirements; verify the official syllabus before relying on a pass or eligibility result.
Check the boundary before trusting a displayed number
If the final is worth 30% and your calculated requirement is 63.33%, an exam scored out of 50 with whole marks requires at least 32/50 = 64%. Scoring 31/50 = 62% would contribute 18.6 course points, producing 74.6% with the previously secured 56 points. The minimum passing mark may therefore be a discrete score above the displayed required percentage.
Likewise, a category marked “not yet graded” should not always be entered as zero: an ungraded weight changes the denominator used for a current average. Check whether your learning portal reports a grade on completed work or a projected final score. Keep these two interpretations separate when comparing the calculator with a portal display.