Keystones — Cornerstone
Five GCSE retrieval questions · 29 January 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 77 + 30
Answer: 77 + 30 = 107 -
2. Algebra
Solve: x + 6 = 11
Answer: x = 5 -
3. Geometry
Find the area of a circle with radius 7cm
Answer: 153.94cm² -
4. Ratio
Simplify the ratio 12:32
Answer: 3:8 -
5. Statistics
Calculate the mean of: 6, 8, 12, 42, 18, 39, 43
Answer: 24