Keystones — Bedrock
Five GCSE retrieval questions · 20 June 2025 · mathsvault.uk/keystones
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1. Number
Round 100 to the nearest 10
Answer: 100 -
2. Algebra
Factorise: 18x + 9
Answer: 3(6x + 3) -
3. Geometry
Opposite = 7cm, hypotenuse = 9.9cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Calculate 10% of 195
Answer: 19.5 -
5. Statistics
Find the mean of: 10, 4, 12, 2
Answer: 7