Keystones — Cornerstone
Five GCSE retrieval questions · 4 July 2026 · mathsvault.uk/keystones
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1. Number
What is the missing number: 44 + ? = 107
Answer: 63 -
2. Algebra
Simplify: 9x + 3x
Answer: 12x -
3. Geometry
Opposite = 14cm, adjacent = 14cm. Calculate the angle
Answer: 45° -
4. Ratio
Calculate 25% of 158
Answer: 39.5 -
5. Statistics
Calculate the range of: 81, 74, 77, 67, 44, 73
Answer: 37