Keystones — Cornerstone
Five GCSE retrieval questions · 10 November 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 53 + 68
Answer: 53 + 68 = 121 -
2. Algebra
Expand: 2(2x + 7)
Answer: 4x + 14 -
3. Geometry
Opposite = 13cm, hypotenuse = 15cm. Find the angle
Answer: 60° (approximately) -
4. Ratio
Calculate 10% of 78
Answer: 7.8 -
5. Statistics
What is the probability of rolling a 3 on a fair die?
Answer: 1⁄6