315 out of 390 = 80.77%
If you scored 315 points out of a possible 390 points, your percentage grade is 80.77%, which is a B- letter grade with a GPA of 2.7.
Standard US Scale
4.0 Scale
Grade Description
Good - Shows solid understanding with minor areas for improvement.
Improvement Tips
- Review your minor mistakes and understand why they occurred
- Participate more actively in class discussions
- Create study groups to reinforce learning
- Practice with more challenging problems
Detailed Grade Table
| Grade | Correct | Incorrect | Percent |
|---|---|---|---|
| A+ | 379 to 390 | 0 to 11 | 97.00 to 100.00 |
| A | 363 to 378 | 12 to 27 | 93.00 to 96.99 |
| A- | 351 to 362 | 28 to 39 | 90.00 to 92.99 |
| B+ | 340 to 350 | 40 to 50 | 87.00 to 89.99 |
| B | 324 to 339 | 51 to 66 | 83.00 to 86.99 |
| B- | 312 to 323 | 67 to 78 | 80.00 to 82.99 |
| C+ | 301 to 311 | 79 to 89 | 77.00 to 79.99 |
| C | 285 to 300 | 90 to 105 | 73.00 to 76.99 |
| C- | 273 to 284 | 106 to 117 | 70.00 to 72.99 |
| D+ | 262 to 272 | 118 to 128 | 67.00 to 69.99 |
| D | 246 to 261 | 129 to 144 | 63.00 to 66.99 |
| D- | 234 to 245 | 145 to 156 | 60.00 to 62.99 |
| F | 0 to 233 | 157 to 390 | 0.00 to 59.99 |
Your grade of 80.77% (B-) is highlighted in the table above. The "Correct" and "Incorrect" columns show the equivalent number of questions for your total of 390 points.
To calculate 315 out of 390 as a percentage, you divide 315 by 390 and then multiply by 100:
This calculation gives you your percentage score, which can then be converted to a letter grade based on your school or institution's grading scale.
Step-by-step explanation:
- Divide the points earned (315) by the total points possible (390):
315 ÷ 390 = 0.8077 - Multiply the result by 100 to get the percentage:
0.8077 × 100 = 80.77% - Convert the percentage to a letter grade using the standard scale:
80.77% = B-
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A score of 315 out of 390 (80.77%) has different implications depending on the educational context:
| Context | Interpretation |
|---|---|
| Homework Assignment | Strong understanding of the material |
| Quiz or Test | Excellent preparation and knowledge retention |
| Final Exam | Mastery of course material |
| Course Grade | Strong performance throughout the course |
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