Keystones — Lintel
Five GCSE retrieval questions · 27 July 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
1000000
Answer: 1 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 4)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 34°. Find adjacent side
Answer: 27.4cm -
4. Ratio Mixed ratio problems
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 42, 40, 39, 23, 45, 14, 50, 26
Answer: 34.9