Keystones — Cornerstone
Five GCSE retrieval questions · 15 March 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 45 + 66
Answer: 45 + 66 = 111 -
2. Algebra
Solve: 5x = 45
Answer: x = 9 -
3. Geometry
Opposite = 15cm, adjacent = 11cm. Calculate the angle
Answer: 53.7° -
4. Ratio
Simplify the ratio 40:30
Answer: 4:3 -
5. Statistics
Calculate the range of: 62, 39, 91, 70, 83, 40
Answer: 52