Keystones — Lintel
Five GCSE retrieval questions · 29 March 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0055
Answer: 5.5 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 28
Answer: (x - 7)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 32°. Find opposite
Answer: 6.9cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 35, 38, 43, 5, 17, 30, 32, 23
Answer: 27.9