Keystones — Cornerstone
Five GCSE retrieval questions · 20 August 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 413 + 618
Answer: 413 + 618 = 1031 -
2. Algebra
Solve: x + 4 = 9
Answer: x = 5 -
3. Geometry
Opposite = 16cm, adjacent = 11cm. Calculate the angle
Answer: 55.5° -
4. Ratio
Simplify the ratio 40:30
Answer: 4:3 -
5. Statistics
Find the mean of: 17, 19, 5, 20
Answer: 15.25