Keystones — Cornerstone
Five GCSE retrieval questions · 13 August 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 618 + 708
Answer: 618 + 708 = 1326 -
2. Algebra
Solve: 4x = 52
Answer: x = 13 -
3. Geometry
Opposite = 12cm, adjacent = 11cm. Calculate the angle
Answer: 47.5° -
4. Ratio
Calculate 50% of 109
Answer: 54.5 -
5. Statistics
Find the mean of: 18, 6, 18
Answer: 14