When you know points missed
Subtract missed points from total points before dividing. Missing 8 on a 50-point test means 42 earned.
A test grade is usually points earned divided by total points. The trick is making sure earned, missed, target, and letter-grade scale all refer to the same test.
Use test grade calculatortest percentage = points earned / total points x 100
If you know points missed instead, use points earned = total points - points missed first.
Problem: You earned 42 points on a 50-point test.
Divide: 42 / 50 = 0.84
Convert to percent: 0.84 x 100 = 84%
Interpret: on a common scale, 84% is usually a B range score.
Subtract missed points from total points before dividing. Missing 8 on a 50-point test means 42 earned.
Multiply the target by total points. To get 90% on a 50-point test, you need 0.90 x 50 = 45 points.
Add extra credit to points earned, but keep total points tied to the original test unless your teacher says otherwise.
Your teacher may use a custom scale. Use the percentage as the math answer, then compare it to the class scale.
Once the test score is in your gradebook, it changes your current class grade. Then the final grade calculator can show what you still need at the end of the term.
Plan the finalPair this guide with the matching calculators, formula reference, and next lesson.
Divide points earned by total points, then multiply by 100. For example, 42 out of 50 is 42 / 50 x 100 = 84%.
Sometimes. If you know total points and points missed, subtract missed points from total points first, then divide by total points.
Yes. A calculator can show the percentage, but the letter grade should follow your teacher's scale if it differs from the standard one.