Keystones — Lintel
Five GCSE retrieval questions · 10 July 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00094
Answer: 9.4 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 14
Answer: (x + 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 18cm, angle = 44°. Find adjacent side
Answer: 12.9cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 11, 30, 41, 22, 13, 25, 18, 42
Answer: 25.3