Keystones — Cornerstone
Five GCSE retrieval questions · 14 December 2024 · mathsvault.uk/keystones
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1. Number
Calculate: 75 + 65
Answer: 75 + 65 = 140 -
2. Algebra
Factorise: 9x² + 9x
Answer: 9x(x + 1) -
3. Geometry
Find the distance between (2, 1) and (7, 5)
Answer: 6.4 -
4. Ratio
Simplify the ratio 40:10
Answer: 4:1 -
5. Statistics
Calculate the mean of: 16, 26, 18, 18, 35, 44
Answer: 26.2