Keystones — Cornerstone

Five GCSE retrieval questions · 1 June 2025 · mathsvault.uk/keystones

1. Number

Calculate: 59 + 35

Answer: 59 + 35 = 94
2. Algebra

Find the next term: 18, 24, 30, 36, ...

Answer: 42
3. Geometry

Opposite = 6cm, hypotenuse = 12cm. Find the angle

Answer: 30° (approximately)
4. Ratio

Simplify: 12:12:15

Answer: 4:4:5
5. Statistics

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

Answer: ¹⁄₂

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