£80 trainers
25% off
= £60
£80 trainers
£25 off
= £55
Learn the Method
1Work out the discount in pounds.
25% of £80: 10% is £8 → 20% is £16 → 5% is £4 → £20.
2Find the price you pay.
£80 − £20 = £60.
3Compare deals in pounds.
Turn every offer into an actual price before choosing.
Worked Example
A meal costs £35. The family leaves a 10% tip. What do they pay in total?
Watch Out! Common Mistakes
Not always! On £80, 25% off saves only £20. Work out both prices first.
Write it properly: money takes two decimal places — £3.50.
Wrong! The tip is 10% of £35 (£3.50), not 10 pence. Total £38.50.
⬇ Cheat Sheet
- Turn every offer into pounds before comparing.
- Discount: find %, subtract. Tip: find %, add.
- Write money with two decimal places.
- Sense-check against the original price.
📖 Continue Your Journey
Quick summary
- Convert every offer into actual pounds before comparing deals.
- Discounts subtract; tips and charges add.
- Always write money with two decimal places: £3.50, not £3.5.
- 25% off £80 saves £20 — so £25 off is the better deal there.
Frequently asked questions
How do you work out a sale price?
Find the discount percentage of the original price and subtract it: £80 at 25% off → £80 − £20 = £60.
Is a bigger percentage always a better discount?
No — a percentage depends on the price it applies to. 50% off £10 saves £5, but 10% off £100 saves £10. Convert to pounds to compare.
How do you add a tip?
Find the tip percentage of the bill and add it on: a 10% tip on £35 is £3.50, so you pay £38.50.
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