Keystones — Cornerstone
Five GCSE retrieval questions · 15 March 2021 · mathsvault.uk/keystones
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1. Number
Calculate: 83 + 52
Answer: 83 + 52 = 135 -
2. Algebra
Solve: x + 13 = 27
Answer: x = 14 -
3. Geometry
Calculate the area of a circle with diameter 14cm
Answer: 153.94cm² -
4. Ratio
Simplify the ratio 6:9
Answer: 2:3 -
5. Statistics
Calculate the mean of: 33, 8, 15, 38, 45, 38, 22
Answer: 28.4