Keystones — Lintel
Five GCSE retrieval questions · 8 February 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
70000
Answer: 7 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x + 4
Answer: (x - 2)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 24cm, angle = 47°. Find adjacent side
Answer: 16.4cm -
4. Ratio Mixed ratio problems
Simplify: 20:24:24
Answer: 5:6:6 -
5. Statistics Mean
Calculate the mean of: 16, 5, 22, 15, 32, 18, 9, 41
Answer: 19.8