Reverse Percentages Pack | KS3 GCSE Foundation & Functional Skills L1–L2 | Lesson, Escape Room & Mur

This comprehensive Reverse Percentages Pack provides everything you need to teach, practise and revise original value problems in an engaging and accessible way. Designed for Functional Skills Maths Level 1–2, GCSE Foundation, and KS3, this bundle includes a full lesson PowerPoint, an Escape-the-Room code challenge, and a Reverse Percentages Murder Mystery. Each resource supports learners in understanding percentage increase, percentage decrease, and calculating the original amount using clear, step-by-step methods.

The main lesson PowerPoint introduces the concept of “percentages backwards,” using simple worked examples, guided practice questions, a stopwatch starter and multiple “You Try” tasks. Clear modelling shows students exactly how to rearrange percentage calculations for both increases and reductions.

The Escape Room activity gives learners four realistic percentage problems. Each answer reveals a digit in a code that students must solve in order to “escape the room.” This makes it ideal for paired work, revision lessons, or motivating reluctant learners.

The Reverse Percentages Murder Mystery adds a second high-engagement challenge. Students must use accurate original-value calculations to determine which superhero suspect is telling the truth, which location matches two correct answers, and which day both problems are correct. This promotes problem solving, reasoning, and careful checking of methods.

What’s Included:
• Full Reverse Percentages lesson PowerPoint (worked examples, guided practice, exam-style questions)
• Escape-the-Room worksheet (4 original value problems + code solution)
• Reverse Percentages Murder Mystery (Who? Where? When?)
• Complete answer sheets for all activities
• Real-life context questions including sales, discounts, depreciation and profit

Skills Covered:
→ Finding the original value after a percentage increase
→ Finding the original value after a percentage decrease
→ Using decimal multipliers
→ Rearranging percentage calculations
→ Checking solutions and reasoning
→ Working accurately with percentages in real-life contexts

Perfect For:
✔ Functional Skills Maths Level 1–2
✔ GCSE Foundation revision
✔ KS3 percentage units
✔ Revision lessons, group tasks or cover lessons
✔ Learners who benefit from high-engagement, puzzle-based activities

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Treasure Hunt and Loop Cards
https://www.tes.com/teaching-resource/treasure-hunt-reverse-percentages-12326314
Test Your Strength Game
https://www.tes.com/teaching-resource/reverse-percentages-test-your-strength-game-1232688