Keystones — Lintel
Five GCSE retrieval questions · 16 September 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
67000000
Answer: 6.7 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 56
Answer: (x + 8)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 15cm, angle = 38°. Find adjacent side
Answer: 11.8cm -
4. Ratio Mixed ratio problems
Express the first part of 2:6 as a fraction in simplest form
Answer: 1⁄4 -
5. Statistics Mean
Calculate the mean of: 34, 5, 33, 25, 23, 36, 47
Answer: 29