Keystones — Lintel
Five GCSE retrieval questions · 29 November 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
82000
Answer: 8.2 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 57°. Find adjacent side
Answer: 9.3cm -
4. Ratio Mixed ratio problems
Divide 198 in the ratio 4:2:3
Answer: 88, 44 and 66 -
5. Statistics Mean
Calculate the mean of: 48, 28, 41, 10, 36, 46, 11, 14
Answer: 29.3