Keystones — Cornerstone
Five GCSE retrieval questions · 29 April 2026 · mathsvault.uk/keystones
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1. Number
Calculate: 71 + 74
Answer: 71 + 74 = 145 -
2. Algebra
Expand: 6(2x + 5)
Answer: 12x + 30 -
3. Geometry
Find the area of a circle with radius 10cm
Answer: 314.16cm² -
4. Ratio
Simplify: 8:12:12
Answer: 2:3:3 -
5. Statistics
Calculate the mean of: 14, 12, 45, 19, 49, 42, 21
Answer: 28.9