Keystones — Cornerstone
Five GCSE retrieval questions · 21 February 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 53 + 36
Answer: 53 + 36 = 89 -
2. Algebra
Solve: 10x - 8 = 8x + 12
Answer: x = 10 -
3. Geometry
Opposite = 9cm, adjacent = 11cm. Calculate the angle
Answer: 39.3° -
4. Ratio
Simplify the ratio 25:40
Answer: 5:8 -
5. Statistics
Find the mean of: 17, 11, 14, 5, 11
Answer: 11.6