Keystones — Lintel

Five GCSE retrieval questions · 16 February 2026 · mathsvault.uk/keystones

1. Number

Add: ²⁄₇ + ²⁄₅

Answer: ²⁴⁄₃₅
2. Algebra

Solve: ^x⁄₂ = 16.5

Answer: x = 33
3. Geometry

Opposite = 10cm, adjacent = 15cm. Calculate the angle

Answer: 33.7°
4. Ratio

Simplify: 8:12:12

Answer: 2:3:3
5. Statistics

Find the range of: -28, 32, -6, 31, -12

Answer: 60

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