20% off 100 = 80 | Discount Calculator
A 20% discount on 100 is 80, saving 20. See the step-by-step discount calculation.
20% off 100 = 80 (you save 20)
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Solution: What is 20 percent off 100?
Discount = 20% × 100 = 20
Final price = 100 − 20 = 80
Final price = 100 − 20 = 80
Step-by-step explanation
- Find the discount amount: 20% of 100 = 0.2 × 100 = 20.
- Subtract the discount from the original price: 100 − 20 = 80.
- So after a 20% discount you pay 80 and save 20.
Good to know
The quick way to a sale price is to multiply by what you still pay: keeping 80% means × 0.8, so 100 × 0.8 = 80 — the same answer in one step.
Frequently asked questions
What is 20 percent off 100?
20% off 100 = 80 (you save 20).
How is it calculated?
See the step-by-step solution above — it uses the standard percentage formula.
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