Keystones — Lintel
Five GCSE retrieval questions · 13 May 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
7200000
Answer: 7.2 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 42
Answer: (x - 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 33°. Find opposite
Answer: 15.6cm -
4. Ratio Mixed ratio problems
Simplify: 18:12:6
Answer: 3:2:1 -
5. Statistics Mean
Calculate the mean of: 27, 45, 38, 22, 28, 18
Answer: 29.7