Keystones — Cornerstone
Five GCSE retrieval questions · 20 July 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 9.8 + 5.1
Answer: 9.8 + 5.1 = 14.9 -
2. Algebra
Solve: x + 12 = 25
Answer: x = 13 -
3. Geometry
Opposite = 10cm, adjacent = 11cm. Calculate the angle
Answer: 42.3° -
4. Ratio
Calculate 10% of 69
Answer: 6.9 -
5. Statistics
Find the mean of: 3, 12, 7, 10
Answer: 8