Keystones — Bedrock
Five GCSE retrieval questions · 29 January 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 78 - 54
Answer: 78 - 54 = 24 -
2. Algebra
Factorise: 20x + 20
Answer: 4(5x + 5) -
3. Geometry
Find the area of a circle with radius 5cm
Answer: 78.54cm² -
4. Ratio
Simplify the ratio 6:16
Answer: 3:8 -
5. Statistics
Find the range of: 11, 32, 17, 21, 16
Answer: 21