Keystones — Lintel
Five GCSE retrieval questions · 15 November 2024 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.042
Answer: 4.2 × 10^-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 4
Answer: (x + 4)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 19cm, angle = 43°. Find adjacent side
Answer: 13.9cm -
4. Ratio Mixed ratio problems
Express the first part of 3:2 as a fraction in simplest form
Answer: 3⁄5 -
5. Statistics Mean
Calculate the mean of: 8, 43, 29, 30, 17, 48
Answer: 29.2