Keystones — Cornerstone

Five GCSE retrieval questions · 24 April 2026 · mathsvault.uk/keystones

1. Number

Simplify: 6⁴ × 6²

Answer: 6⁶
2. Algebra

Solve: x + 11 = 25

Answer: x = 14
3. Geometry

Opposite = 15cm, hypotenuse = 21.2cm. Find the angle

Answer: 45° (approximately)
4. Ratio

Simplify: 12:12:18

Answer: 2:2:3
5. Statistics

Find the range of: 21, 24, 11, 9, 33

Answer: 24

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