How to calculate 13 out of 20
13 ÷ 20 × 100 = 65%
Divide the number right by the total and multiply by 100. Teachers usually round to the nearest whole percent, so13/20 is recorded as 65% — a D on the standard 90/80/70/60 scale and a D on a plus/minus scale. Each question is worth 5%, so 7 wrongcost 35 points.
Nearby scores out of 20
13 out of nearby totals
- 13 out of 18 is 72.22% (C−)
- 13 out of 19 is 68.42% (D+)
- 13 out of 21 is 61.9% (D−)
- 13 out of 22 is 59.09% (F)
Grade a whole test of 20
See the full grading chart for 20 questions for every score out of 20, or open the Easy Grader with 20 questions to mark each paper, add half points and use your own scale.