13 out of 18 as a Percentage
13 out of 18 is 72.22%, which is a letter grade of C-.
Percentage
72.22%
Letter Grade
C-
Wrong Answers
5
Simplified
13/18
Understanding the Calculation
To convert 13 out of 18 into a percentage, divide the correct answers (13) by the total questions (18) and multiply by 100:
(13 ÷ 18) × 100 = 72.22%
With 13 correct answers out of 18, you got 5 wrong. The fraction 13/18 simplifies to 13/18. On the standard grading scale, 72.22% corresponds to a C-.