Keystones — Bedrock
Five GCSE retrieval questions · 25 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: -1 + (-8)
Answer: -9 -
2. Algebra
Simplify: 4x + 5x
Answer: 9x -
3. Geometry
Opposite = 11cm, hypotenuse = 15.6cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Calculate 50% of 153
Answer: 76.5 -
5. Statistics
Find the mean of: 19, 4, 3, 10
Answer: 9