Keystones — Cornerstone
Five GCSE retrieval questions · 31 December 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 65 + 25
Answer: 65 + 25 = 90 -
2. Algebra
Solve: x + 14 = 31
Answer: x = 17 -
3. Geometry
Opposite = 8cm, hypotenuse = 9.2cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify: 12:16:12
Answer: 3:4:3 -
5. Statistics
Find the mean of: 11, 12, 17, 4
Answer: 11