Keystones — Lintel
Five GCSE retrieval questions · 3 May 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.082
Answer: 8.2 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 48°. Find opposite
Answer: 12.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 43, 19, 49, 5, 33, 30, 20
Answer: 28.4