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Revising exchange rates for your GCSE or IGCSE maths exams? This tutorial covers everything you need to know about solving exchange rate problems using ratios and scale factors.
We’ll show you:
How to write exchange rates as ratios.
How to use scale factors to convert currencies.
How to do multi-step questions with multiple exchange rates.
From simple conversions to complex comparisons across currencies, this video has got you covered for 2025/2026 GCSE exams including IGCSE exams and mocks - basically everything, really!
Examples in This Video:
🔹 Zloty to Euros: Convert the euro cost of an item priced in Polish zloty with an exchange rate of 1 euro = 4.28 zloty.
🔹 Comparing Costs Across Countries: Is a watch cheaper in Poland or France? Convert prices between currencies.
🔹 Multi-Currency Conversion: Compare the price of a designer handbag in Paris, Warsaw and Prague by working through exchange rates.
After this video you will be able to:
✅ Write and interpret exchange rates as ratios.
✅ Use scale factors to convert currencies.
✅ Do multi-step questions with multiple currencies and exchange rates.
🎯 Top Tips:
🎯 Write exchange rates as ratios.
🎯 Use scale factors (second value ÷ first value).
🎯 When you have multiple exchange rates, convert everything to one currency.
🎯 Do multi-step questions.
Chapters:
0:00 Writing Exchange Rates with Ratios & Scale Factors
0:40 Worked Example 1: Converting Currencies
3:33 Worked Example 2: Converting Euros
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