Decimal
0.2 × 25 = 5
Fraction
⅕ of 25 = 5
Equation
(20 ÷ 100) × 25 = 5
How to calculate 20% of 25
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 × 25 = 5
Where 20% of 25 comes up in practice
A 20% tip on a $25 restaurant bill comes out to $5.00, bringing the total to $30.00.
How to read this number
- 20% is the modern US standard tip for good service — $5.00 on a $25.00 bill brings the total to $30.00.
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.
- 5 is 20% of 25
- 5 out of 25 = 20%
- 20% off $25.00 = $20.00
Frequently asked
Common follow-up questions for 20% of 25.
Yes — multiplying by the decimal form (0.2) is exactly what "20% of 25" means. 25 × 0.2 = 5.
20% equals ⅕. So ⅕ of 25 = 5, which is the same answer reached the long way.
No — 20% of $25 is the discount amount itself ($5.00). 20% off $25 means the sale price is $20.00 (the original price minus the discount).
⅕ — divide by 5. Or take 10% and double it. For 20% of 25 that gives 5 directly.
The number is 25. To work it out, divide 5 by 0.2: 5 ÷ 0.2 = 25.
Total = $30.00. The bill ($25) plus a 20% tip ($5.00) = $30.00.
Need a different calculation?
Use the full Percentage Calculator — five modes including reverse calculations, percentage change, and percentage difference.
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