Easy Grader

What Grade Is a 31/40?

31/40 = 77.5%, which is a C (C+ on a plus/minus scale). That is 9 wrong out of 40.

77.5%31 out of 40
Standard
C
Plus / minus
C+
Wrong
9

31 ÷ 40 × 100 = 77.5% ≈ 78%

How to calculate 31 out of 40

31 ÷ 40 × 100 = 77.5%

Divide the number right by the total and multiply by 100. Teachers usually round to the nearest whole percent, so31/40 is recorded as 78% — a C on the standard 90/80/70/60 scale and a C+ on a plus/minus scale. Each question is worth 2.5%, so 9 wrongcost 22.5 points.

Nearby scores out of 40

  • 29/40 is 72.5% (C)
  • 30/40 is 75% (C)
  • 32/40 is 80% (B−)
  • 33/40 is 82.5% (B)

31 out of nearby totals

Grade a whole test of 40

See the full grading chart for 40 questions for every score out of 40, or open the Easy Grader with 40 questions to mark each paper, add half points and use your own scale.

Frequently asked questions

What grade is a 31/40?

31/40 is 77.5%, which rounds to 78% — a C on the standard 90/80/70/60 scale and a C+ on a plus/minus scale.

What is 31 out of 40 as a percentage?

77.5%. Divide 31 by 40 and multiply by 100: 31 ÷ 40 × 100 = 77.5%. Rounded to a whole number that is 78%.

Is 31/40 passing?

Yes. 31/40 rounds to 78%, at or above the usual 60% pass mark. Some classes need a C (70%) or higher to pass.

How many questions were missed on a 31/40?

9 out of 40. Each question is worth 2.5%, so 9 wrong takes 22.5% off a perfect score.