Keystones — Cornerstone
Five GCSE retrieval questions · 15 May 2026 · mathsvault.uk/keystones
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1. Number
What is 2.2 + 2.66 + 0.64?
Answer: 2.2 + 2.66 + 0.64 = 5.5 -
2. Algebra
For y = x³ + 7, calculate y when x = 4
Answer: y = 71 -
3. Geometry
Calculate the area of a circle with diameter 16cm
Answer: 201.06cm² -
4. Ratio
Find 68% of 267
Answer: 181.56 -
5. Statistics
Find the mean of: 9, 4, 17, 20, 15
Answer: 13