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The core idea

The core idea

Flowchart showing m = n + kp with forward operations multiply by p and add n, and reverse operations subtract n and divide by p to isolate k

Rearranging a harder formula means isolating one variable so the final line has xxx on its own on one side. The safest idea is balance: whatever you do to one side, you must do to the other side.

Rearranging Harder Formulae Lesson

  1. IGCSE
  2. /Maths
  3. /Rearranging Harder Formulae

Step-by-step lessons covering CIE IGCSE Maths Rearranging Harder Formulae for Core and Extended tier. Each lesson works through exam-style questions in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) format. Start with the Core-tier fundamentals in number and algebra before moving on to the more demanding Extended-only topics like calculus-adjacent algebra and advanced trigonometry.

Lessons