Keystones — Lintel
Five GCSE retrieval questions · 18 March 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0006
Answer: 6 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 21
Answer: (x - 7)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 21cm, angle = 46°. Find adjacent side
Answer: 14.6cm -
4. Ratio Mixed ratio problems
Simplify: 24:24:12
Answer: 2:2:1 -
5. Statistics Mean
Calculate the mean of: 50, 7, 36, 12, 37, 37
Answer: 29.8