Keystones — Cornerstone
Five GCSE retrieval questions · 7 January 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 69 + 27
Answer: 69 + 27 = 96 -
2. Algebra
Simplify: 8x + 9x
Answer: 17x -
3. Geometry
Opposite = 19cm, adjacent = 16cm. Calculate the angle
Answer: 49.9° -
4. Ratio
Simplify the ratio 21:15
Answer: 7:5 -
5. Statistics
Calculate the mean of: 30, 31, 43, 21, 21, 24, 22, 44
Answer: 29.5