Keystones — Cornerstone
Five GCSE retrieval questions · 8 June 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 51 + 65
Answer: 51 + 65 = 116 -
2. Algebra
What is the next term? 4, 12, 36, 108, ...
Answer: 324 -
3. Geometry
Opposite = 14cm, hypotenuse = 19.8cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify: 9:18:6
Answer: 3:6:2 -
5. Statistics
Calculate the mean of: 12, 41, 24, 10, 30, 8, 21
Answer: 20.9