Keystones — Lintel
Five GCSE retrieval questions · 1 November 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
8400000
Answer: 8.4 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 55°. Find opposite
Answer: 21.4cm -
4. Ratio Mixed ratio problems
Divide 176 in the ratio 1:3:4
Answer: 22, 66 and 88 -
5. Statistics Mean
Calculate the mean of: 15, 17, 13, 7, 38, 37, 44, 48
Answer: 27.4