Keystones — Cornerstone
Five GCSE retrieval questions · 21 October 2023 · mathsvault.uk/keystones
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1. Number
Calculate: 48 + 27
Answer: 48 + 27 = 75 -
2. Algebra
Factorise: 9x² + 9x
Answer: 9x(x + 1) -
3. Geometry
Calculate the area of a circle with diameter 14cm
Answer: 153.94cm² -
4. Ratio
Simplify the ratio 28:16
Answer: 7:4 -
5. Statistics
Find the range of: 5, 18, 29, 35, 16
Answer: 30