Summary and Exam Tips for Applying Number
Applying Number is a subtopic of Numbers and the Number System, which falls under the subject Mathematics in the Edexcel IGCSE curriculum. This section focuses on understanding currency conversions and rates. Currency conversion involves using exchange rates to convert one currency to another. For example, converting ₤225 to euros (€) at an exchange rate of ₤1 = €1.62 results in €364.5. Similarly, converting 2000 Saudi Riyals to euros at an exchange rate of €1 = 5.087 Saudi Riyals results in €393.16.
Understanding rates is crucial, as they represent a special ratio between two different units. For instance, if a 12-ounce can of corn costs 69¢, the rate is 69¢ per 12 ounces. Another example is calculating the time required for a machine to fill containers at a rate of 134 containers in two minutes, which would take approximately 14.9 minutes to fill 1000 containers. Mastery of these concepts is essential for solving real-world problems involving numbers and their applications.
Exam Tips
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Understand Exchange Rates: Practice converting currencies using given exchange rates. Remember to multiply the amount by the exchange rate to find the equivalent value in another currency.
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Master Rate Calculations: Familiarize yourself with calculating rates, especially when dealing with different units. Practice problems that involve finding time, cost, or quantity using given rates.
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Use Real-World Examples: Relate problems to real-life scenarios to better understand the application of currency conversions and rates.
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Check Your Units: Always ensure that the units in your calculations are consistent, especially when dealing with rates involving different units.
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Practice, Practice, Practice: Regularly solve problems related to currency conversions and rates to build confidence and improve accuracy.
