Keystones — Lintel
Five GCSE retrieval questions · 28 April 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0018
Answer: 1.8 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 32°. Find adjacent side
Answer: 14.4cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 6, 23, 40, 15, 19, 42, 33
Answer: 25.4