Keystones — Cornerstone
Five GCSE retrieval questions · 1 January 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 37 + 41
Answer: 37 + 41 = 78 -
2. Algebra
Factorise: 2x² + 3x
Answer: x(2x + 3) -
3. Geometry
Opposite = 13cm, adjacent = 13cm. Calculate the angle
Answer: 45° -
4. Ratio
Calculate 50% of 164
Answer: 82 -
5. Statistics
Find the mean of: 19, 15, 7, 20, 11
Answer: 14.4