Keystones — Lintel
Five GCSE retrieval questions · 30 January 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
940000
Answer: 9.4 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 30cm, angle = 29°. Find adjacent side
Answer: 26.2cm -
4. Ratio Mixed ratio problems
Simplify: 10:10:4
Answer: 5:5:2 -
5. Statistics Mean
Calculate the mean of: 35, 32, 33, 35, 39, 49
Answer: 37.2