Keystones — Cornerstone

Five GCSE retrieval questions · 2 June 2025 · mathsvault.uk/keystones

1. Number

90000000

Answer: 9 × 10⁷
2. Algebra

For y = x³, find y when x = 4

Answer: y = 64
3. Geometry

Calculate the distance between (5, 8) and (8, 12)

Answer: 5
4. Ratio

Simplify: 12:8:10

Answer: 6:4:5
5. Statistics

Find the mean of: 9, 17, 10, 12

Answer: 12

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