Keystones — Lintel
Five GCSE retrieval questions · 16 January 2023 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.029
Answer: 2.9 × 10^-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 39cm, angle = 54°. Find adjacent side
Answer: 22.9cm -
4. Ratio Mixed ratio problems
Simplify: 6:4:4
Answer: 3:2:2 -
5. Statistics Mean
Calculate the mean of: 9, 36, 31, 46, 15, 24, 39, 29
Answer: 28.6