apt4Maths: REVERSE PERCENTAGES PowerPoint for GCSE Maths (Lesson 7 of 7 on Percentages)

PowerPoint Presentation on 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. It has been written by a highly experienced teacher (of 25+ years), senior examiner and reviser for Maths and Stats examinations. It includes:

Lesson objectives
Step-by-step explanations of the subject matter
Examples to aid understanding
Questions to check understanding
Answers to questions, with explanations
Suggestions regarding which topic(s) should be moved on to next

This is 1 of a set of 7 PowerPoints covering topics relating to ‘Percentages’ that APT Initiatives has published for GCSE (and Key Stage 3) Mathematics. The full set of 7 PowerPoints (93 slides, excluding Title Pages) covers the following percentage-based topics:

01 Percentages – An Introduction (9 slides).
02 FDP conversions (16 slides).
03 Express as a percentage (17 slides).
04 Percentages of amounts (13 slides).
05 Percentage changes (11 slides).
06 Compound percentages (12 slides).
07 Reverse percentages (15 slides).

These PowerPoints relate to the ‘Number’ and ‘Ratio, Proportion & Rates of Change’ sections of the Maths specifications. Other sets relating to Number concern:

Place Value and Approximations
Calculations
Fractions.

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