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Rearranging Harder Formulae
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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 on Edexcel IGCSE Maths Rearranging Harder Formulae. Each one builds up to exam-style questions. Build confidence with the shared Foundation-tier content first, since roughly 40% of Higher-tier marks are targeted at the grades 4–5 boundary that both tiers have in common.

Lessons