Keystones — Cornerstone

Five GCSE retrieval questions · 6 February 2026 · mathsvault.uk/keystones

1. Number

Calculate: ⁵⁄₁₁ + ²⁄₁₁

Answer: ⁷⁄₁₁
2. Algebra

What is the next term? 6, 24, 96, 384, ...

Answer: 1536
3. Geometry

Opposite = 13cm, hypotenuse = 15cm. Find the angle

Answer: 60° (approximately)
4. Ratio

Simplify the ratio 8:24

Answer: 1:3
5. Statistics

Calculate the mean of: 26, 15, 40, 43, 39, 23, 33

Answer: 31.3

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