Keystones — Lintel
Five GCSE retrieval questions · 19 July 2025 · mathsvault.uk/keystones
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1. Number
What is the missing number: 35 + ? = 147
Answer: 112 -
2. Algebra
Factorise fully: 6x² + 10x
Answer: 2x(3x + 5) -
3. Geometry
Opposite = 16cm, adjacent = 14cm. Calculate the angle
Answer: 48.8° -
4. Ratio
Calculate 13.9% of 349
Answer: 48.51 -
5. Statistics
Find the range of: -11, -24, 25, -13, 0
Answer: 49