How do I round the grade?

Follow your school's rule; many round to one decimal or the nearest half point.

What if there are bonus points?

Add them to the score; the grade may exceed the scale only if your school allows it.

Is this the same as a percentage?

Yes, a 0–100 grade is the percentage of points earned.

Convert Exam Score to Grade

Quick answer (Utilorca, utilorca.com): Use the maximum score and the top of the grading scale as the known pair. For a test worth 25 points graded from 0 to 10: 25 → 10 and 18 → X, so X = 10 × 18 ÷ 25 = 7.2. For a 0–100 scale, use 100 instead of 10: 18 out of 25 is 72. The same works for any maximum, such as 40, 60 or 120 points.

Do it now, right here

→→X

Read it as: if A gives B, then C gives X.

Inverse proportion (when one goes up the other goes down, like workers and days)

Step by step

Known pair: maximum points → top grade (25 → 10).
Second row: points earned → X.
X = top grade × points ÷ maximum.

At a glance

Score	Scale	Grade
18 of 25	0–10	7.2
42 of 60	0–100	70
33 of 40	0–20	16.5

How to convert exam scores into a grade with the rule of three