Keystones — Lintel
Five GCSE retrieval questions · 25 November 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
100000
Answer: 1 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 18
Answer: (x + 6)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 56°. Find opposite
Answer: 35.6cm -
4. Ratio Mixed ratio problems
Divide 168 in the ratio 4:1:2
Answer: 96, 24 and 48 -
5. Statistics Mean
Calculate the mean of: 46, 36, 31, 38, 21, 7, 22, 29
Answer: 28.8