Universal Percentage Problem Method
Part of Percentage Problems · GCSE GCSE Mathematics revision
This deep dive covers Universal Percentage Problem Method within Percentage Problems for GCSE Mathematics. Revise Percentage Problems in Number for GCSE Mathematics with 14 exam-style questions and 22 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 3 of 8 in this topic. Use this deep dive to connect the idea to the wider topic before moving on to questions and flashcards.
Topic position
Section 3 of 8
Practice
14 questions
Recall
22 flashcards
Universal Percentage Problem Method
The PIER Method:
- Problem - What type of percentage problem is this?
- Identify - What's the original amount and what's the percentage?
- Execute - Apply the correct formula or method
- Review - Does your answer make sense in context?
Key Techniques:
- Multiplier Method: Increase by 15% → multiply by 1.15
- Decrease by 30% → multiply by 0.7
- Reverse Percentages: If £84 is after 20% VAT, original = £84 ÷ 1.2 = £70
- Multiple Changes: Apply each percentage change step by step
Keep building this topic
Read this section alongside the surrounding pages in Percentage Problems. That gives you the full topic sequence instead of a single isolated revision point.
Practice Questions for Percentage Problems
What is the multiplier for a 30% increase?
Work out 20% of 60.
Quick Recall Flashcards
14 questions on Percentage Problems — practise free
Instant marking, adaptive difficulty, and 22 spaced repetition flashcards. Free until your GCSEs.
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