How to work out 18 out of 25
Divide the score by the total and multiply by 100: 18 ÷ 25 = 0.72, and 0.72 × 100 = 72%.
That means 7 answers were wrong, and each question was worth 4% of the total. One more correct answer (19/25) would be 76%.
Grading chart for 25 questions
| Wrong | Score | Percent | Grade |
|---|---|---|---|
| 0 | 25/25 | 100% | A+ |
| 1 | 24/25 | 96% | A |
| 2 | 23/25 | 92% | A− |
| 3 | 22/25 | 88% | B+ |
| 4 | 21/25 | 84% | B |
| 5 | 20/25 | 80% | B− |
| 6 | 19/25 | 76% | C |
| 7 | 18/25 | 72% | C− |
| 8 | 17/25 | 68% | D+ |
| 9 | 16/25 | 64% | D |
| 10 | 15/25 | 60% | D− |
| 11 | 14/25 | 56% | F |
| 12 | 13/25 | 52% | F |
| 13 | 12/25 | 48% | F |
| 14 | 11/25 | 44% | F |
| 15 | 10/25 | 40% | F |
| 16 | 9/25 | 36% | F |
| 17 | 8/25 | 32% | F |
| 18 | 7/25 | 28% | F |
| 19 | 6/25 | 24% | F |
| 20 | 5/25 | 20% | F |
| 21 | 4/25 | 16% | F |
| 22 | 3/25 | 12% | F |
| 23 | 2/25 | 8% | F |
| 24 | 1/25 | 4% | F |
| 25 | 0/25 | 0% | F |
Letter grades use the common US scale (A ≥ 93%, B ≥ 83%, C ≥ 73%, D ≥ 63%, with ± bands). Your school may use different cut-offs.