Keystones — Cornerstone
Five GCSE retrieval questions · 2 July 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 23 + 55
Answer: 23 + 55 = 78 -
2. Algebra
For y = x³ + 5, calculate y when x = 3
Answer: y = 32 -
3. Geometry
Find the distance between (3, 4) and (8, 10)
Answer: 7.81 -
4. Ratio
Find 37% of 291
Answer: 107.67 -
5. Statistics
Calculate the mean of: 30, 50, 15, 27, 25, 17, 39, 13
Answer: 27