Keystones — Lintel
Five GCSE retrieval questions · 9 September 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.017
Answer: 1.7 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 16
Answer: (x - 4)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 54°. Find adjacent side
Answer: 11.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 32, 20, 48, 44, 41, 15, 15, 27
Answer: 30.3