Keystones — Lintel
Five GCSE retrieval questions · 24 December 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0055
Answer: 5.5 × 10^-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 42
Answer: (x - 6)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 43°. Find adjacent side
Answer: 24.cm -
4. Ratio Mixed ratio problems
Simplify: 8:12:12
Answer: 2:3:3 -
5. Statistics Mean
Calculate the mean of: 9, 26, 40, 21, 6, 24, 36, 24
Answer: 23.3