Keystones — Cornerstone
Five GCSE retrieval questions · 9 May 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 74 + 56
Answer: 74 + 56 = 130 -
2. Algebra
Factorise: 18x + 9
Answer: 3(6x + 3) -
3. Geometry
Calculate the distance between (9, 4) and (12, 8)
Answer: 5 -
4. Ratio
Simplify: 12:16:16
Answer: 3:4:4 -
5. Statistics
Calculate the mean of: 25, 5, 14, 50, 33, 23, 22, 31
Answer: 25.4