Keystones — Lintel
Five GCSE retrieval questions · 23 December 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0084
Answer: 8.4 × 10^-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 50°. Find opposite
Answer: 11.9cm -
4. Ratio Mixed ratio problems
Simplify: 18:18:12
Answer: 3:3:2 -
5. Statistics Mean
Calculate the mean of: 14, 44, 45, 41, 31, 41
Answer: 36