Keystones — Lintel
Five GCSE retrieval questions · 18 November 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
96000
Answer: 9.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 64°. Find adjacent side
Answer: 14.9cm -
4. Ratio Mixed ratio problems
Express the first part of 3:5 as a fraction in simplest form
Answer: 3⁄8 -
5. Statistics Mean
Calculate the mean of: 45, 30, 6, 30, 30, 31
Answer: 28.7