Keystones — Cornerstone
Five GCSE retrieval questions · 23 October 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 36 + 48
Answer: 36 + 48 = 84 -
2. Algebra
Factorise: 8x² + 4x
Answer: 4x(2x + 1) -
3. Geometry
Calculate the area of a circle with diameter 24cm
Answer: 452.39cm² -
4. Ratio
Simplify the ratio 12:21
Answer: 4:7 -
5. Statistics
Calculate the mean of: 16, 6, 31, 41, 6, 12, 32, 38
Answer: 22.8