Keystones — Lintel
Five GCSE retrieval questions · 31 August 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0012
Answer: 1.2 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 36
Answer: (x - 6)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 32°. Find adjacent side
Answer: 15.3cm -
4. Ratio Mixed ratio problems
Divide 120 in the ratio 2:2:1
Answer: 48, 48 and 24 -
5. Statistics Mean
Calculate the mean of: 5, 43, 16, 8, 21, 46, 44
Answer: 26.1