Keystones — Cornerstone

Five GCSE retrieval questions · 31 July 2026 · mathsvault.uk/keystones

1. Number

Add: ⁵⁄₇ + ⁴⁄₆

Answer: ²⁹⁄₂₁
2. Algebra

Solve: x + 14 = 22

Answer: x = 8
3. Geometry

Opposite = 15cm, adjacent = 8cm. Calculate the angle

Answer: 61.9°
4. Ratio

Calculate 50% of 117

Answer: 58.5
5. Statistics

Find the mean of: 14, 14, 6, 19

Answer: 13.25

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