Keystones — Lintel
Five GCSE retrieval questions · 8 February 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
430000
Answer: 4.3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 2)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 34°. Find opposite
Answer: 18.9cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 36, 6, 35, 19, 17, 41, 50
Answer: 29.1