Clear methods. Logical steps. No guessing.
Percentages, ratio, and proportion are some of the most common — and most confusing — topics in secondary maths. Many students learn a method but struggle when questions are worded differently or combine ideas.
This Casefile is designed to change that.
Students are guided step by step through the core concepts, with a clear focus on why each method works. Every idea is explained simply, followed by worked examples before students apply the method themselves.
Each section builds logically on the last, helping students recognise the type of problem they’re facing and choose the correct approach — exactly what examiners look for.
Inside the Casefile:
Clear explanations in plain language
Fully worked examples
Gradually increasing practice questions
Exam-style problems that bring everything together
This isn’t about memorising tricks. It’s about building reliable problem-solving skills so students can handle percentages, ratio, and proportion with confidence in exams.
Each of the above topics contained worked solutions and coverage of the main misconceptions students have.