Keystones — Cornerstone
Five GCSE retrieval questions · 8 January 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 209 + 975
Answer: 209 + 975 = 1184 -
2. Algebra
Simplify: 8x + 7x
Answer: 15x -
3. Geometry
Opposite = 12cm, hypotenuse = 13.9cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Find 77% of 181
Answer: 139.37 -
5. Statistics
Find the mean of: 7, 3, 11, 6
Answer: 6.75