Keystones — Lintel
Five GCSE retrieval questions · 14 August 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
530000
Answer: 5.3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 28
Answer: (x + 7)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 23cm, angle = 65°. Find adjacent side
Answer: 9.7cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 33, 19, 13, 9, 24, 15, 41, 14
Answer: 21