Decimal
0.2 × 10 = 2
Fraction
⅕ of 10 = 2
Equation
(20 ÷ 100) × 10 = 2
How to calculate 20% of 10
Two steps — convert to a decimal, then multiply.
- 1
Convert the percentage to a decimal
20 ÷ 100 = 0.2
- 2
Multiply the original number by the decimal
0.2 × 10 = 2
Where 20% of 10 comes up in practice
A 20% tip on a $10 restaurant bill comes out to $2.00, bringing the total to $12.00.
How to read this number
- 20% is the modern US standard tip for good service — $2.00 on a $10.00 bill brings the total to $12.00.
Mental math shortcut
⅕ — divide by 5. Or take 10% and double it.
The same calculation, expressed three ways
Knowing one of these gives you the other two — handy when a problem is phrased differently to what you typed.
- 2 is 20% of 10
- 2 out of 10 = 20%
- 20% off $10.00 = $8.00
Frequently asked
Common follow-up questions for 20% of 10.
Yes — multiplying by the decimal form (0.2) is exactly what "20% of 10" means. 10 × 0.2 = 2.
20% equals ⅕. So ⅕ of 10 = 2, which is the same answer reached the long way.
⅕ — divide by 5. Or take 10% and double it. For 20% of 10 that gives 2 directly.
The number is 10. To work it out, divide 2 by 0.2: 2 ÷ 0.2 = 10.
Total = $12.00. The bill ($10) plus a 20% tip ($2.00) = $12.00.
Need a different calculation?
Use the full Percentage Calculator — five modes including reverse calculations, percentage change, and percentage difference.
Open Percentage Calculator