Keystones — Lintel
Five GCSE retrieval questions · 10 March 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0096
Answer: 9.6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 6
Answer: (x + 6)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 39cm, angle = 43°. Find adjacent side
Answer: 28.5cm -
4. Ratio Mixed ratio problems
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 28, 14, 41, 37, 39, 49, 31, 5
Answer: 30.5