Keystones — Lintel
Five GCSE retrieval questions · 19 May 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
17000
Answer: 1.7 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 24
Answer: (x + 8)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 37°. Find adjacent side
Answer: 26.4cm -
4. Ratio Mixed ratio problems
Divide 234 in the ratio 2:4:3
Answer: 52, 104 and 78 -
5. Statistics Mean
Calculate the mean of: 26, 48, 50, 8, 15, 9, 9
Answer: 23.6