Keystones — Cornerstone
Five GCSE retrieval questions · 21 September 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 72 + 94
Answer: 72 + 94 = 166 -
2. Algebra
Find the next term: 17, 22, 27, 32, ...
Answer: 37 -
3. Geometry
Opposite = 13cm, hypotenuse = 18.4cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Find 75% of 90
Answer: 67.5 -
5. Statistics
Calculate the mean of: 44, 15, 11, 40, 45, 50, 42, 9
Answer: 32