Keystones — Lintel
Five GCSE retrieval questions · 28 June 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00058
Answer: 5.8 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 15
Answer: (x + 5)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 64°. Find adjacent side
Answer: 14cm -
4. Ratio Mixed ratio problems
Simplify: 16:8:16
Answer: 2:1:2 -
5. Statistics Mean
Calculate the mean of: 41, 32, 48, 32, 5, 26, 8
Answer: 27.4