Keystones — Cornerstone
Five GCSE retrieval questions · 10 August 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 16 × 41
Answer: 16 × 41 = 656 -
2. Algebra
Solve: 4x = 40
Answer: x = 10 -
3. Geometry
Opposite = 20cm, adjacent = 18cm. Calculate the angle
Answer: 48° -
4. Ratio
Simplify: 6:6:12
Answer: 1:1:2 -
5. Statistics
Calculate the mean of: 32, 50, 38, 42, 26, 46
Answer: 39