Keystones — Lintel
Five GCSE retrieval questions · 2 April 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.046
Answer: 4.6 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 15
Answer: (x + 5)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 59°. Find adjacent side
Answer: 16.5cm -
4. Ratio Mixed ratio problems
Divide 120 in the ratio 3:3:4
Answer: 36, 36 and 48 -
5. Statistics Mean
Calculate the mean of: 26, 42, 46, 40, 25, 38, 25
Answer: 34.6