Keystones — Lintel
Five GCSE retrieval questions · 18 October 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
20000
Answer: 2 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 2)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 36cm, angle = 51°. Find adjacent side
Answer: 22.7cm -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 18, 35, 18, 38, 45, 34, 35
Answer: 31.9