Keystones — Cornerstone

Five GCSE retrieval questions · 9 July 2026 · mathsvault.uk/keystones

1. Number

Add: ⁴⁄₆ + ¹⁄₅

Answer: ¹³⁄₁₅
2. Algebra

Factorise: 7x² + 5x

Answer: x(7x + 5)
3. Geometry

Opposite = 13cm, adjacent = 20cm. Calculate the angle

Answer: 33°
4. Ratio

Calculate 50% of 91

Answer: 45.5
5. Statistics

What is the probability of getting heads when flipping a fair coin?

Answer: ¹⁄₂

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