Keystones — Cornerstone
Five GCSE retrieval questions · 26 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 468 + 356
Answer: 468 + 356 = 824 -
2. Algebra
Solve: x + 14 = 27
Answer: x = 13 -
3. Geometry
Opposite = 17cm, adjacent = 10cm. Calculate the angle
Answer: 59.5° -
4. Ratio
Simplify: 6:12:10
Answer: 3:6:5 -
5. Statistics
Calculate the mean of: 40, 30, 42, 31, 7, 24
Answer: 29