What is 20% of 25?
The answer is 5.
Result Explanation
20% of 25 = 5. Because 20% is one fifth, you can also do 25 ÷ 5 = 5. If you mean 20% off 25, then 5 is the discount and the new total is 20 (use the discount calculator for before/after).
If you’re comparing two values (not taking a slice of one number), use the percentage change calculator. For reverse problems like “25 is 20% of what?”, use the reverse percentage calculator.
Why Five Sits Between 3.75 and 6.25 on This Base
Fifteen percent of twenty-five is three and three-quarters; twenty-five percent is six and a quarter. Your twenty-percent answer is exactly halfway between those two in percentage points (twenty is midway from fifteen to twenty-five), but the pound gap is not symmetric because the rate is applied to the same base—what matters for shopping is that 5 and 20 after discount are both easy to say aloud at the till.
Linking to 20% of 100 gives a classroom anchor: a fifth of a hundred is twenty, and twenty-five is a quarter of a hundred, so a fifth of that quarter is five—another path to the same number without touching a calculator.
Mental Maths Shortcuts for 20% of 25
Primary route: 25 ÷ 5 = 5.
- 10% of 25 = 2.5; doubling gives 20% = 5.
- From 25% of 25 = 6.25, subtract 5% of 25 = 1.25 to reach 5.
If you already know 20% of 20 = 4, add 20% of 5 = 1 because 25 = 20 + 5 and the rate is linear—another decomposition that survives under pressure.
Real-World Examples
Example 1: Twenty percent off a £25 plan
The promotion cuts £5; the promotional price is £20 until taxes or add-ons apply.
Example 2: Tip or service pool
Eighteen-plus-two style thinking sometimes rounds to twenty percent on a £25 tab; setting aside £5 for pooled service matches that headline rate before you split by covers.
Example 3: Freelance deposit
A client holds back 20% of a £25 milestone; the retained amount is £5 and the cleared portion is £20 if the contract phrases it as “of the gross milestone.”
Example 4: Comparing neighbours on the twenty line
Moving from 20% of 20 (4) up to this page adds one pound per five pounds of base—linear scaling you can reuse when the quote nudges from twenty to twenty-five without changing the percentage.
Common Mistakes
- Answering 20 when asked for twenty percent of twenty-five—twenty is what is left after a twenty-percent discount, not the slice itself.
- Multiplying 20 × 25 and skipping the divide-by-hundred, then wondering why 500 appeared.
- Confusing 20% of 25 with 25% of 20—coincidentally also 5 here, but the reasoning differs and the pattern does not stay lucky on other pairs.
- Treating 0.2% of twenty-five as twenty percent; the decimal belongs on the rate, not doubled.
- Using “divide twenty-five by twenty” because both numbers are twenty-something—the fifth always divides the base by five, not the base by the percentage digits.
Related Links
FAQ
What is 20% of 25?
20% of 25 is 5.
How do you calculate 20% of 25?
Multiply 25 by 0.2, or divide 25 by 5 because 20% is one fifth.
What is 20% off 25?
20% off 25 is a reduction of 5, leaving 20.