Keystones — Cornerstone
Five GCSE retrieval questions · 6 June 2026 · mathsvault.uk/keystones
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1. Number
What is the missing number: 63 + ? = 162
Answer: 99 -
2. Algebra
Expand: 7(x + 3)
Answer: 7x + 21 -
3. Geometry
Opposite = 14cm, adjacent = 16cm. Calculate the angle
Answer: 41.2° -
4. Ratio
Simplify: 6:4:6
Answer: 3:2:3 -
5. Statistics
Find the range of: 39, 22, 31, 14, 30
Answer: 25