Keystones — Bedrock
Five GCSE retrieval questions · 14 February 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 31 + 72
Answer: 31 + 72 = 103 -
2. Algebra
Expand: 2(x + 9)
Answer: 2x + 18 -
3. Geometry
Opposite = 12cm, hypotenuse = 13.9cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Simplify the ratio 6:18
Answer: 1:3 -
5. Statistics
Find the mean of: 19, 8, 2, 7, 18
Answer: 10.8