Keystones — Lintel
Five GCSE retrieval questions · 20 October 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0021
Answer: 2.1 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 36°. Find adjacent side
Answer: 26.7cm -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 5, 45, 44, 28, 43, 6, 10
Answer: 25.9