Keystones — Lintel
Five GCSE retrieval questions · 26 November 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
8200000
Answer: 8.2 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 5
Answer: (x + 5)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 43°. Find opposite
Answer: 23.3cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 36, 38, 26, 17, 41, 41, 5
Answer: 29.1