Keystones — Cornerstone
Five GCSE retrieval questions · 17 July 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 84 + 99
Answer: 84 + 99 = 183 -
2. Algebra
For y = x³ + 11, calculate y when x = 4
Answer: y = 75 -
3. Geometry
Opposite = 16cm, adjacent = 15cm. Calculate the angle
Answer: 46.8° -
4. Ratio
Simplify the ratio 21:6
Answer: 7:2 -
5. Statistics
Find the mean of: 13, 8, 6, 2, 3
Answer: 6.4