Keystones — Lintel
Five GCSE retrieval questions · 5 April 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0001
Answer: 1 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 24
Answer: (x + 8)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 35cm, angle = 36°. Find adjacent side
Answer: 28.3cm -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 39, 31, 32, 11, 37, 22, 50
Answer: 31.7