💰 Make Change Trainer (UK coins)

Work out the change from UK coins and notes, then hand the exact coins with the fewest pieces. Learn the greedy method for 1p–£2 and practise 5 rounds. Everything runs on your device.

Change calculator
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🧾 Shopkeeper round — 5 chances
Press “New sale”.
Score: 0/5
Coin values & the greedy rule
1p · 2p · 5p · 10p · 20p · 50p · £1 · £2.
Greedy method: always take the largest coin that fits, then repeat. For UK coins this always gives the fewest possible coins — a £2 coin rather than four 50ps.

Check: price + change must equal what the customer handed over — never short-change yourself.