Keystones — Cornerstone
Five GCSE retrieval questions · 26 March 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 914 + 643
Answer: 914 + 643 = 1557 -
2. Algebra
For y = x³, find y when x = 5
Answer: y = 125 -
3. Geometry
Opposite = 10cm, hypotenuse = 11.5cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify: 12:24:16
Answer: 3:6:4 -
5. Statistics
Find the mean of: 7, 14, 13, 3, 17
Answer: 10.8