Keystones — Cornerstone
Five GCSE retrieval questions · 27 May 2026 · mathsvault.uk/keystones
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1. Number
What is the missing number: 42 + ? = 103
Answer: 61 -
2. Algebra
Collect like terms: 2x + 6y + 3x + 2y
Answer: 5x + 8y -
3. Geometry
Opposite = 19cm, adjacent = 13cm. Calculate the angle
Answer: 55.6° -
4. Ratio
Simplify the ratio 10:14
Answer: 5:7 -
5. Statistics
Find the range of: 26, 31, 16, 27, 10
Answer: 21