Keystones — Lintel
Five GCSE retrieval questions · 5 August 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.078
Answer: 7.8 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 5
Answer: (x + 5)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 51°. Find opposite
Answer: 16.cm -
4. Ratio Mixed ratio problems
Simplify: 8:4:12
Answer: 2:1:3 -
5. Statistics Mean
Calculate the mean of: 32, 48, 22, 16, 17, 35, 15, 6
Answer: 23.9