Keystones — Lintel
Five GCSE retrieval questions · 31 July 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
4700000
Answer: 4.7 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 38°. Find opposite
Answer: 13.3cm -
4. Ratio Mixed ratio problems
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 33, 7, 5, 18, 20, 40, 49, 46
Answer: 27.3