Keystones — Cornerstone

Five GCSE retrieval questions · 14 June 2026 · mathsvault.uk/keystones

1. Number

700000

Answer: 7 × 10⁵
2. Algebra

Simplify: 4x + 5x

Answer: 9x
3. Geometry

Opposite = 17cm, adjacent = 17cm. Calculate the angle

Answer: 45°
4. Ratio

Simplify the ratio 35:25

Answer: 7:5
5. Statistics

Calculate the mean of: 33, 16, 43, 15, 33, 21, 22, 24

Answer: 25.9

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