Keystones — Lintel
Five GCSE retrieval questions · 3 June 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
910000
Answer: 9.1 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 21
Answer: (x + 7)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 28cm, angle = 35°. Find adjacent side
Answer: 22.9cm -
4. Ratio Mixed ratio problems
Simplify: 12:10:12
Answer: 6:5:6 -
5. Statistics Mean
Calculate the mean of: 36, 41, 27, 28, 20, 17, 23
Answer: 27.4