Keystones — Cornerstone
Five GCSE retrieval questions · 13 December 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 957 + 299
Answer: 957 + 299 = 1256 -
2. Algebra
Solve: 3x = 24
Answer: x = 8 -
3. Geometry
Opposite = 6cm, hypotenuse = 6.9cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify: 20:12:16
Answer: 5:3:4 -
5. Statistics
Find the range of: 20, 26, 40, 17, 35
Answer: 23