Keystones — Lintel
Five GCSE retrieval questions · 28 December 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
850000
Answer: 8.5 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 21cm, angle = 41°. Find opposite
Answer: 18.3cm -
4. Ratio Mixed ratio problems
Divide 135 in the ratio 4:3:2
Answer: 60, 45 and 30 -
5. Statistics Mean
Calculate the mean of: 23, 33, 25, 19, 10, 34
Answer: 24