Keystones — Lintel
Five GCSE retrieval questions · 8 November 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
7100000
Answer: 7.1 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 52°. Find opposite
Answer: 25.6cm -
4. Ratio Mixed ratio problems
Divide 60 in the ratio 2:1:2
Answer: 24, 12 and 24 -
5. Statistics Mean
Calculate the mean of: 15, 20, 18, 43, 5, 14
Answer: 19.2