What is 100 Percent of 42?
100% of 42 = 42
- Result
- 42
- Remaining
- 0
- 100% as decimal
- 1
- 42 + 100%
- 84
Sumwise · Maintained by Theo Abbott (pen name) · automated checks · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How the checks work
How to work it out
- Turn the percentage into a decimal: 100 ÷ 100 = 1
- Multiply: 1 × 42 = 42
- Check: Work backwards: 42 ÷ 42 × 100 = 100%.
Another method. As a proportion of part to whole: 100/100 = part/42, so part = 100 × 42 ÷ 100 = 42. Both methods always give the same answer.
In a spreadsheet: =100%*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
100% of a number is the number itself, so the answer is 42.
Mark-ups: pricing an item at 100% of its $42 cost means selling it for $42.
Adding and taking away 100%
Increasing 42 by 100% gives 84. These do not cancel out: raising 42 by 100% and then lowering the result by 100% ends at 0, because the second 100% 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 100. 100% of 42 and 42% of 100 are always equal (both are 100 × 42 ÷ 100 = 42), so you can swap the numbers when one order is easier to work out in your head.
Practice
| 19% of 48 | Show answer19% of 48 = 9.12 |
| 74% of 54 | Show answer74% of 54 = 39.96 |
| 68% of 97 | Show answer68% of 97 = 65.96 |
| 13% of 68 | Show answer13% of 68 = 8.84 |
| 52% of 3 | Show answer52% of 3 = 1.56 |
| 6% of 3 | Show answer6% of 3 = 0.18 |
How answers are calculated and checked: methodology.
Questions
What is 100 Percent of 42?
100% of 42 is 42. Formula, steps and practice examples.
What is 100% off 42?
0. Taking 100% off leaves 0% of 42.
What is 42 plus 100%?
84. Adding 100% is the same as multiplying by 2.