Keystones — Lintel
Five GCSE retrieval questions · 8 October 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.055
Answer: 5.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 18
Answer: (x + 6)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 59°. Find adjacent side
Answer: 11.8cm -
4. Ratio Mixed ratio problems
Simplify: 4:10:6
Answer: 2:5:3 -
5. Statistics Mean
Calculate the mean of: 30, 17, 20, 22, 42, 14
Answer: 24.2