21 out of 138 = 15.22%
If you scored 21 points out of a possible 138 points, your percentage grade is 15.22%, which is a F letter grade with a GPA of 0.0.
Standard US Scale
4.0 Scale
Grade Description
Unsatisfactory - Does not meet minimum requirements and needs substantial improvement.
Improvement Tips
- Schedule a meeting with your teacher immediately
- Consider intensive tutoring or academic support services
- Rebuild your foundation with basic concepts first
- Develop better study habits and time management skills
- Ask for extra credit opportunities if available
Detailed Grade Table
| Grade | Correct | Incorrect | Percent |
|---|---|---|---|
| A+ | 134 to 138 | 0 to 4 | 97.00 to 100.00 |
| A | 129 to 133 | 5 to 9 | 93.00 to 96.99 |
| A- | 125 to 128 | 10 to 13 | 90.00 to 92.99 |
| B+ | 121 to 124 | 14 to 17 | 87.00 to 89.99 |
| B | 115 to 120 | 18 to 23 | 83.00 to 86.99 |
| B- | 111 to 114 | 24 to 27 | 80.00 to 82.99 |
| C+ | 107 to 110 | 28 to 31 | 77.00 to 79.99 |
| C | 101 to 106 | 32 to 37 | 73.00 to 76.99 |
| C- | 97 to 100 | 38 to 41 | 70.00 to 72.99 |
| D+ | 93 to 96 | 42 to 45 | 67.00 to 69.99 |
| D | 87 to 92 | 46 to 51 | 63.00 to 66.99 |
| D- | 83 to 86 | 52 to 55 | 60.00 to 62.99 |
| F | 0 to 82 | 56 to 138 | 0.00 to 59.99 |
Your grade of 15.22% (F) is highlighted in the table above. The "Correct" and "Incorrect" columns show the equivalent number of questions for your total of 138 points.
To calculate 21 out of 138 as a percentage, you divide 21 by 138 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 (21) by the total points possible (138):
21 ÷ 138 = 0.1522 - Multiply the result by 100 to get the percentage:
0.1522 × 100 = 15.22% - Convert the percentage to a letter grade using the standard scale:
15.22% = F
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A score of 21 out of 138 (15.22%) has different implications depending on the educational context:
| Context | Interpretation |
|---|---|
| Homework Assignment | Insufficient understanding, requires review |
| Quiz or Test | Inadequate preparation, requires comprehensive review |
| Final Exam | Insufficient understanding of course material |
| Course Grade | Below acceptable performance standards |
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