Keystones — Bedrock
Five GCSE retrieval questions · 27 October 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 27 + 89
Answer: 27 + 89 = 116 -
2. Algebra
Simplify: 5x + 7x
Answer: 12x -
3. Geometry
Opposite = 15cm, hypotenuse = 21.2cm. Find the angle
Answer: 45° (approximately) -
4. Ratio
Calculate 10% of 173
Answer: 17.3 -
5. Statistics
Find the mean of: 20, 16, 19
Answer: 18.333333333333