Keystones — Cornerstone
Five GCSE retrieval questions · 2 April 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 11²
Answer: 11² = 121 -
2. Algebra
Expand: 3(4x + 7)
Answer: 12x + 21 -
3. Geometry
Find the area of a circle with radius 9cm
Answer: 254.47cm² -
4. Ratio
Simplify: 15:12:9
Answer: 5:4:3 -
5. Statistics
Find the range of: 17, 16, 27, 17, 23
Answer: 11