Keystones — Lintel
Five GCSE retrieval questions · 27 April 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 - 11x + 28
Answer: (x - 7)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 26cm, angle = 41°. Find opposite
Answer: 22.6cm -
4. Ratio Mixed ratio problems
Divide 128 in the ratio 1:1:2
Answer: 32, 32 and 64 -
5. Statistics Mean
Calculate the mean of: 11, 45, 24, 11, 14, 26, 14, 17
Answer: 20.3