Keystones — Cornerstone
Five GCSE retrieval questions · 28 July 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 26 + (38)
Answer: 64 -
2. Algebra
Factorise: 24x + 32
Answer: 4(6x + 8) -
3. Geometry
Opposite = 6cm, hypotenuse = 8.5cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Simplify the ratio 12:18
Answer: 2:3 -
5. Statistics
Find the range of: 26, 29, 23, 31, 15
Answer: 16