# apt4Maths: PowerPoint Presentation on Percentages – An Introduction – for GCSE (and Key Stage 3) Mathematics

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This is the 1st PowerPoint Presentation only of the full set of 7 PowerPoint Presentations on Percentages for GCSE (and Key Stage 3) Maths. This PowerPoint reviews the meaning of percent(age) and explains how to work out what percentage of a diagram is shaded.

The full set of 7 PowerPoint Presentations on Percentages can be purchased from www.apt-initiatives.com

#### Product Information

The full set of 7 PowerPoint Presentations on Percentages (93 slides, excluding Title Pages) covers the following topics:

• 01 Percentages – An Introduction (9 slides): Reviews the meaning of percent(age) and explains how to work out what percentage of a diagram is shaded. INCLUDED in this download
• 02 FDP Conversions (16 slides): Reviews expressing as a fraction, finding equivalent fractions, cancelling fractions down and that the line in a fraction tells you to divide, before explaining how to convert between fractions, decimals, and percentages.
• 03 Express as a Percentage (17 slides): Reviews how to convert between fractions, decimals, and percentages, before explaining how to express one value as a percentage of another, using equivalent fractions or a calculator.
• 04 Percentages of Amounts (13 slides): Explains how to calculate percentages of amounts with and without using a calculator.
• 05 Percentage Changes (11 slides): Reviews terminology inked to percentages (per annum, simple and compound interest, appreciation, and depreciation) before explaining how to calculate the end value following a percentage increase or decrease using the ‘add on / take off’ method, as well as the ‘multiplier’ method.
• 06 Compound Percentages (12 slides): Reviews the difference between simple and compound interest and explains how to calculate the end value after a number of percentage increases or decreases have taken place.
• 07 Reverse Percentages (15 slides): Reviews the multiplier method for finding the end value after a percentage change, before explaining how to calculate the original value given the end value and the percentage increase or decrease that was applied.