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Compound Growth and Decay Revision Videos

AQA, Edexcel, OCR, Eduqas, WJEC

Last updated 22 Mar 2021

Some things change in value over time, and you might be asked to find out what the new value is. These videos will teach you how to increase a value (growth) or decrease it (decay).

These videos will take you through example questions that could come up in your exam. Try to remember the general method for these increases/decreases!

Exam questions might ask you to just find out the new value, but they could also ask you to compare with other interest rates! Watch this video to go through word problems that do just that.

Compound interest (HEGARTYMATHS)

The method for decay is exactly the same as the method for growth, just remember to use a multiplier that's less than 1!

Depreciation (HEGARTYMATHS)

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