Keystones — Lintel
Five GCSE retrieval questions · 5 June 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.065
Answer: 6.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 10
Answer: (x + 5)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 31cm, angle = 43°. Find adjacent side
Answer: 22.7cm -
4. Ratio Mixed ratio problems
Simplify: 10:6:12
Answer: 5:3:6 -
5. Statistics Mean
Calculate the mean of: 5, 39, 41, 32, 23, 45, 34
Answer: 31.3