Keystones — Lintel
Five GCSE retrieval questions · 30 April 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.019
Answer: 1.9 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 25°. Find adjacent side
Answer: 13.6cm -
4. Ratio Mixed ratio problems
Simplify the ratio 5m:500cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 26, 13, 6, 43, 32, 43
Answer: 27.2