Keystones — Lintel
Five GCSE retrieval questions · 26 January 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
900000
Answer: 9 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 58°. Find opposite
Answer: 24cm -
4. Ratio Mixed ratio problems
Simplify: 15:9:12
Answer: 5:3:4 -
5. Statistics Mean
Calculate the mean of: 12, 29, 42, 20, 22, 11, 9, 27
Answer: 21.5