Keystones — Cornerstone
Five GCSE retrieval questions · 7 May 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 32 + 96
Answer: 32 + 96 = 128 -
2. Algebra
Factorise: 20x + 35
Answer: 5(4x + 7) -
3. Geometry
Calculate the area of a circle with diameter 19cm
Answer: 283.53cm² -
4. Ratio
Simplify the ratio 15:18
Answer: 5:6 -
5. Statistics
Calculate the mean of: 31, 11, 11, 5, 30, 17
Answer: 17.5