Keystones — Lintel
Five GCSE retrieval questions · 28 August 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 888 + 723
Answer: 888 + 723 = 1611 -
2. Algebra
Factorise fully: 16x² + 20x
Answer: 4x(4x + 5) -
3. Geometry
Adjacent = 17cm, hypotenuse = 33cm. Find the angle
Answer: 59° -
4. Ratio
Simplify: 12:24:24
Answer: 1:2:2 -
5. Statistics
Find the range of: 23, 0, 20, -24, 18
Answer: 47