Keystones — Lintel
Five GCSE retrieval questions · 28 July 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0081
Answer: 8.1 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 2)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 48°. Find opposite
Answer: 11.cm -
4. Ratio Mixed ratio problems
Divide 250 in the ratio 4:3:3
Answer: 100, 75 and 75 -
5. Statistics Mean
Calculate the mean of: 36, 11, 31, 25, 25, 31
Answer: 26.5