What is 84 Percent of 5?
84% of 5 = 4.2
Step by step
- Turn the percentage into a decimal: 84 ÷ 100 = 0.84
- Multiply: 0.84 × 5 = 4.2
How the answer is worked out
“Percent” means “per hundred”, so 84% is 84 out of every 100, or 0.84 as a decimal. Taking 84% of 5 means multiplying 5 by 0.84, which gives 4.2.
4.2 is the 84% share of 5. The remaining 16% is 0.8, and the two parts add back up to 5.
Why calculate this?
Taking a percentage of a number is how discounts, tips, tax and interest are worked out.
- Discounts: 84% off an item priced $5 saves $4.2, so you pay $0.8.
- Tips: a 84% tip on a bill of $5 is $4.2, so the total is $9.2.
- Interest: simple interest of 84% a year on $5 earns $4.2 in one year and $21 over five years.
- Tax: a sales tax of 84% on a price of $5 adds $4.2, so the price including tax is $9.2.
A quicker way
Use 10% and 1%: 10% of 5 is 0.5 and 1% is 0.05. 84% is 8 × 10% + 4 × 1% = 4 + 0.2 = 4.2.
Swap the numbers if that is easier: 84% of 5 is always the same as 5% of 84, because both are 84 × 5 ÷ 100.
Check the answer
Work backwards: 4.2 ÷ 5 × 100 = 84%. Getting 84% back shows the answer is right.
Rounding
Rounded to a whole number the result is 4, to one decimal place 4.2 and to two decimal places 4.20. Round only at the end: rounding halfway through a calculation can change the last digit.
The formula explained
result = percentage ÷ 100 × number. Dividing the percentage by 100 turns it into a decimal multiplier, so 25% becomes 0.25 and 150% becomes 1.5. Multiplying the number by that decimal gives the share.
Another worked example: 17% of 59
- Turn the percentage into a decimal: 17 ÷ 100 = 0.17
- Multiply: 0.17 × 59 = 10.03
Common percentages of 5
10% of 5 is 0.5, 20% is 1, a quarter (25%) is 1.25, half (50%) is 2.5 and three quarters (75%) is 3.75. Knowing these makes it easy to estimate any other percentage of 5 in your head.
Adding and taking away 84%
Increasing 5 by 84% gives 9.2 and decreasing it by 84% gives 0.8. These do not cancel out: raising 5 by 84% and then lowering the result by 84% ends at 1.472, because the second 84% is taken of a bigger number.
Finding the original number
If 4.2 is 84% of something, divide by 0.84 to get it back: 4.2 ÷ 0.84 = 5. This is how you work out a price before tax or a full amount from a share of it.
Other ways to ask this
The same calculation is often asked in other words. All of these have the answer above:
- What is 84 percent of 5?
- 84% of 5
- 84 percent times 5
- Find 84% of 5
- How much is 84 per cent of 5?
Terms used on this page
- Percentage: the rate, the number with the % sign.
- Base: the number you take the percentage of.
- Decimal multiplier: the percentage divided by 100.
- Mark-up and discount: adding or taking away a percentage of a price.
The answer in other forms
| Result | 4.2 |
|---|---|
| Remaining | 0.8 |
| 84% as decimal | 0.84 |
| 5 + 84% | 9.2 |
Related results
| 5% of 5 | 5% of 5 = 0.25 |
| 10% of 5 | 10% of 5 = 0.5 |
| 15% of 5 | 15% of 5 = 0.75 |
| 20% of 5 | 20% of 5 = 1 |
| 25% of 5 | 25% of 5 = 1.25 |
| 50% of 5 | 50% of 5 = 2.5 |
| 75% of 5 | 75% of 5 = 3.75 |
The other way round: 5% of 84
Doing it in a spreadsheet
In Excel, Google Sheets or Numbers type =84%*5 into any cell. Replace the numbers with cell references (for example A1 and B1) to reuse the formula for a whole column.
Common mistakes
Forgetting to divide the percentage by 100 makes the answer 100 times too big. Note that x% of y always equals y% of x.
Practice examples
| 17% of 59 | Show answer17% of 59 = 10.03 |
| 80% of 15 | Show answer80% of 15 = 12 |
| 47% of 84 | Show answer47% of 84 = 39.48 |
| 38% of 23 | Show answer38% of 23 = 8.74 |
| 43% of 76 | Show answer43% of 76 = 32.68 |
| 70% of 69 | Show answer70% of 69 = 48.3 |
| 48% of 87 | Show answer48% of 87 = 41.76 |
| 40% of 86 | Show answer40% of 86 = 34.4 |
| 2% of 18 | Show answer2% of 18 = 0.36 |
| 61% of 5 | Show answer61% of 5 = 3.05 |
How this answer was calculated
The result is worked out from the numbers in this page's address when the page is opened, using exact arithmetic wherever possible and rounding only for display. Nothing is copied from a printed table. If you think an answer is wrong, please tell us through the contact page and we will check it.
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Questions
What is 84 Percent of 5?
84% of 5 is 4.2. Formula, steps and practice examples.
What is 84% off 5?
0.8. Taking 84% off leaves 16% of 5.
What is 5 plus 84%?
9.2. Adding 84% is the same as multiplying by 1.84.
What is 84% of 5 as a fraction?
84/100 × 5 = 420/100, which simplifies to 21/5.
How do I find 84% of a number on a calculator?
Multiply the number by 0.84. For 5 that is 5 × 0.84 = 4.2. On many calculators you can also type 5 × 84 %.