Keystones — Lintel

Five GCSE retrieval questions · 26 February 2026 · mathsvault.uk/keystones

1. Number

Add: ⁴⁄₅ + ⁵⁄₈

Answer: ⁵⁷⁄₄₀
2. Algebra

Solve: 8x = 64

Answer: x = 8
3. Geometry

Opposite = 11cm, adjacent = 10cm. Calculate the angle

Answer: 47.7°
4. Ratio

Calculate 27.7% of 938

Answer: 259.83
5. Statistics

Calculate the mean of: 44, 23, 15, 7, 28, 20, 31

Answer: 24

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