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Prerequisites

- A knowledge of the four operations from lessons N2a, N2b, N2c and N2d is assumed.
- R4a – Using ratio notation, and reducing ratios to simplest form
- R6a – Expressing a multiplicative relationship between two quantities as a ratio or a fraction

# Part 1 – Arithmetic with money

Click the tabs for extension tasks…

You have four standard British coins.

- What is the greatest possible total value of these coins?

- £8

- What is the lowest possible total that
**cannot**be made using four or fewer standard British coins?

- 38p

Teacher resources for Part 1

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- Slides in PPTX (with click-to-reveal answers)
- Slides in PDF (one slide per page, suitable for importing into IWB software)

- Worksheet G14c Part 1 Arithmetic with money
- Handout (slides with exercises only; 4 per page for reduced printing)

Links to past exam and UKMT questions

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# Part 2 – Converting between currencies

Teacher resources for Part 2

Links to past exam questions

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Unlimited practice questions: converting between currencies

In the real world

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# Vocabulary note

What is the plural of penny? And have you ever heard people say *the penny dropped* when describing the moment someone realises something? Where did this idiom come from?

What next?

“Time is money” is an oft-quoted phrase attributed to Benjamin Franklin, and it relates to the economic concept of

*opportunity cost*. The following lesson doesn’t require you to have understood this lesson on money, but it may be a good one to move onto: