Sumwise

What is 20 Percent of 27?

20% of 27 = 5.4

Result
5.4
Remaining
21.6
20% as decimal
0.2
27 + 20%
32.4

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

  1. Turn the percentage into a decimal: 20 ÷ 100 = 0.2
  2. Multiply: 0.2 × 27 = 5.4
  3. Check: Work backwards: 5.4 ÷ 27 × 100 = 20%.

Another method. As a proportion of part to whole: 20/100 = part/27, so part = 20 × 27 ÷ 100 = 5.4. Both methods always give the same answer.

In a spreadsheet: =20%*27. 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

5.4 is the 20% share of 27. The remaining 80% is 21.6, and the two parts add back up to 27.

Discounts: 20% off an item priced $27 saves $5.4, so you pay $21.6.

Adding and taking away 20%

Increasing 27 by 20% gives 32.4 and decreasing it by 20% gives 21.6. These do not cancel out: raising 27 by 20% and then lowering the result by 20% ends at 25.92, because the second 20% is taken of a bigger number.

Related results

Results for nearby numbers
5% of 27

5% of 27 = 1.35

10% of 27

10% of 27 = 2.7

15% of 27

15% of 27 = 4.05

25% of 27

25% of 27 = 6.75

50% of 27

50% of 27 = 13.5

75% of 27

75% of 27 = 20.25

The other way round: 27% of 20. 20% of 27 and 27% of 20 are always equal (both are 20 × 27 ÷ 100 = 5.4), so you can swap the numbers when one order is easier to work out in your head.

Practice

4% of 5
Show answer

4% of 5 = 0.2

15% of 25
Show answer

15% of 25 = 3.75

88% of 64
Show answer

88% of 64 = 56.32

37% of 48
Show answer

37% of 48 = 17.76

13% of 26
Show answer

13% of 26 = 3.38

36% of 3
Show answer

36% of 3 = 1.08

Calculate another

How answers are calculated and checked: methodology.

Questions

What is 20 Percent of 27?

20% of 27 is 5.4. Formula, steps and practice examples.

What is 20% off 27?

21.6. Taking 20% off leaves 80% of 27.

What is 27 plus 20%?

32.4. Adding 20% is the same as multiplying by 1.2.