Keystones — Lintel
Five GCSE retrieval questions · 19 July 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
880000
Answer: 8.8 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 30cm, angle = 46°. Find opposite
Answer: 31.cm -
4. Ratio Mixed ratio problems
Divide 120 in the ratio 4:3:1
Answer: 60, 45 and 15 -
5. Statistics Mean
Calculate the mean of: 9, 45, 23, 20, 22, 45, 18, 31
Answer: 26.6