Keystones — Cornerstone
Five GCSE retrieval questions · 5 June 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 53 + ? = 186
Answer: 133 -
2. Algebra
Solve: 8x + 6 = x + 41
Answer: x = 5 -
3. Geometry
Opposite = 13cm, adjacent = 14cm. Calculate the angle
Answer: 42.9° -
4. Ratio
Simplify the ratio 15:20
Answer: 3:4 -
5. Statistics
Calculate the range of: 35, 20, 40, 79, 58, 69
Answer: 59