Final exam worth 20%
A final worth 20% can move the course by at most 20 points. Most of the grade is already locked.
82% now, goal 85%
needed = (85 − 82 × 0.80) / 0.20 = 97%
You need 97%. Open this 20% final.
If you score 70% instead
82 × 0.80 + 70 × 0.20 = 79.6%
The same page shows that under “If I score this on the final.” A goal of 90 from an 82 with only 20% left needs 122%, which is above 100. See a 40% final, where the same gap is smaller.
Steps in the calculator
- Open the final grade calculator.
- Enter your current grade (82%), your goal (85%) and the final’s weight (20% of the course).
- Read the score you need on the final at the top.
- Optional: type a score in “If I score this on the final” (70% in this example) to see the course grade it would give you.