Keystones — Cornerstone
Five GCSE retrieval questions · 17 August 2025 · mathsvault.uk/keystones
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1. Number
Add: 35.79 + 62.86
Answer: 35.79 + 62.86 = 98.65 -
2. Algebra
Factorise: 2x² + 9x
Answer: x(2x + 9) -
3. Geometry
Opposite = 10cm, adjacent = 14cm. Calculate the angle
Answer: 35.5° -
4. Ratio
Calculate 10% of 111
Answer: 11.1 -
5. Statistics
Find the mean of: 10, 9, 7, 14, 9
Answer: 9.8