What is 8 Percent of 42?
8% of 42 = 3.36
- Result
- 3.36
- Remaining
- 38.64
- 8% as decimal
- 0.08
- 42 + 8%
- 45.36
Sumwise · Checked by Theo Abbott · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How we check it
How to work it out
- Turn the percentage into a decimal: 8 ÷ 100 = 0.08
- Multiply: 0.08 × 42 = 3.36
- Check: Work backwards: 3.36 ÷ 42 × 100 = 8%.
Another method. As a proportion of part to whole: 8/100 = part/42, so part = 8 × 42 ÷ 100 = 3.36. Both methods always give the same answer.
In a spreadsheet: =8%*42. Forgetting to divide the percentage by 100 makes the answer 100 times too big. Note that x% of y always equals y% of x.
What the result means
3.36 is the 8% share of 42. The remaining 92% is 38.64, and the two parts add back up to 42.
Discounts: 8% off an item priced $42 saves $3.36, so you pay $38.64.
Adding and taking away 8%
Increasing 42 by 8% gives 45.36 and decreasing it by 8% gives 38.64. These do not cancel out: raising 42 by 8% and then lowering the result by 8% ends at 41.7312, because the second 8% is taken of a bigger number.
Related results
| 5% of 42 | 5% of 42 = 2.1 |
| 10% of 42 | 10% of 42 = 4.2 |
| 15% of 42 | 15% of 42 = 6.3 |
| 20% of 42 | 20% of 42 = 8.4 |
| 25% of 42 | 25% of 42 = 10.5 |
| 50% of 42 | 50% of 42 = 21 |
| 75% of 42 | 75% of 42 = 31.5 |
The other way round: 42% of 8
Practice
| 2% of 51 | Show answer2% of 51 = 1.02 |
| 43% of 16 | Show answer43% of 16 = 6.88 |
| 27% of 87 | Show answer27% of 87 = 23.49 |
| 46% of 5 | Show answer46% of 5 = 2.3 |
| 40% of 89 | Show answer40% of 89 = 35.6 |
| 61% of 13 | Show answer61% of 13 = 7.93 |
How answers are calculated and checked: methodology.
Questions
What is 8 Percent of 42?
8% of 42 is 3.36. Formula, steps and practice examples.
What is 8% off 42?
38.64. Taking 8% off leaves 92% of 42.
What is 42 plus 8%?
45.36. Adding 8% is the same as multiplying by 1.08.