Maths KS3 / GCSE: Percentages

The clip describes how percentage discounts can be worked out without using a calculator.

The scene then progresses to online shopping and calculating the original value using a multiplier.

The final scenes are the number of views of two dance videos; calculating one quantity as a percentage of another and comparing to make judgments.

The word ‘percentage’ is very familiar to us as it is used regularly in the media to describe anything from changes to interest rates, shopping sales and discounted offers or exam results.

Percentages are a useful way of making comparisons. So percentages are very much part of our lives. But what does percentage actually mean?

Now per cent means out of 100 and the word Per Cent comes from the Latin Per Centum and shown by the symbol %.

This is from the series: Real Life Maths

Teacher Notes

The video clip predominantly features normal life situations such as shopping where people may regularly use maths and calculations.

Pupils could be given items in class, and asked to work out discounts or original prices.

Split into two teams, and presented as a competition, the students could be given a percentages quiz.

Curriculum Notes

This clip will be relevant for teaching Maths at KS3/GCSE in England Wales and Northern Ireland. Also at National 4, 5 and Higher in Scotland.

This topic appears in OCR, Edexcel, AQA, WJEC in England and Wales, CCEA GCSE in Northern Ireland and SQA in Scotland.

More from the series: Real Life Maths

Algebra
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Sequences
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Pythagoras
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Probability
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Trigonometry
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Fractions
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Geometry
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Finance
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Ratio and Proportion
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