Keystones — Lintel
Five GCSE retrieval questions · 27 June 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
520000
Answer: 5.2 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 5
Answer: (x + 5)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 27cm, angle = 48°. Find adjacent side
Answer: 18.cm -
4. Ratio Mixed ratio problems
Simplify: 10:8:4
Answer: 5:4:2 -
5. Statistics Mean
Calculate the mean of: 46, 30, 45, 21, 22, 21, 44
Answer: 32.7