Keystones — Lintel
Five GCSE retrieval questions · 8 January 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
930000
Answer: 9.3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 36°. Find opposite
Answer: 18.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 26, 41, 50, 13, 9, 43, 29
Answer: 30.1