Keystones — Cornerstone
Five GCSE retrieval questions · 2 May 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 6 + 7
Answer: 13 -
2. Algebra
Expand: 2(x + 7)
Answer: 2x + 14 -
3. Geometry
Calculate the area of a right triangle with perpendicular sides 10cm and 8cm
Answer: 40cm² -
4. Ratio
Find 15% of 157
Answer: 23.55 -
5. Statistics
Calculate the range of: 54, 41, 74, 74, 113, 72
Answer: 72