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# Growth and decay problems (exponential)

Teacher resources

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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 (with space for student work)
- Handout (slides with exercises only; 4 per page for reduced printing)

- Skills drill worksheet (15 questions on one side of A4; answers included)

- Random Question Generator – compound interest: find final amount
- Random Question Generator – growth and decay problems: find final amount
- Random Question Generator – growth and decay problems: find initial amount
- Random Question Generator – growth and decay problems: find rate of growth/decay
- Random Question Generator – growth and decay problems: find time period
- Random Question Generator – mixed questions

Links to past exam questions

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#### Unlimited practice questions: compound interest and depreciation

# Simple interest

Simple interest (as opposed to compound interest, covered above) is rarely seen in the real world, but can make appearances in maths textbooks and exams.

Teacher resources

**Teachers**: log in to access the following:

- Random Question Generator – simple interest: find final amount
- Random Question Generator – simple interest: find rate of interest
- Random Question Generator – simple interest: find time period
- Random Question Generator – mixed questions

In the real world

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