Keystones — Cornerstone

Five GCSE retrieval questions · 25 March 2026 · mathsvault.uk/keystones

1. Number

Calculate: ²⁄₁₀ + ³⁄₁₀

Answer: ¹⁄₂
2. Algebra

Expand: 5(x + 2)

Answer: 5x + 10
3. Geometry

Opposite = 15cm, adjacent = 14cm. Calculate the angle

Answer: 47°
4. Ratio

Simplify: 16:12:24

Answer: 4:3:6
5. Statistics

Find the range of: 23, 34, 18, 44, 38

Answer: 26

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