Keystones — Cornerstone
Five GCSE retrieval questions · 1 April 2026 · mathsvault.uk/keystones
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1. Number
What is the missing number: 44 + ? = 112
Answer: 68 -
2. Algebra
Solve: 3x = 33
Answer: x = 11 -
3. Geometry
Opposite = 7cm, hypotenuse = 14cm. Find the angle
Answer: 30° (approximately) -
4. Ratio
Calculate 25% of 112
Answer: 28 -
5. Statistics
Calculate the mean of: 34, 29, 6, 36, 11, 31
Answer: 24.5