Keystones — Cornerstone
Five GCSE retrieval questions · 14 August 2022 · mathsvault.uk/keystones
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1. Number
Calculate: 43 + 49
Answer: 43 + 49 = 92 -
2. Algebra
Factorise: 21x + 24
Answer: 3(7x + 8) -
3. Geometry
Find the area of a circle with radius 6cm
Answer: 113.cm² -
4. Ratio
Simplify the ratio 15:20
Answer: 3:4 -
5. Statistics
Find the mean of: 3, 13, 9, 6
Answer: 7.75