Keystones — Lintel
Five GCSE retrieval questions · 26 May 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.027
Answer: 2.7 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 2)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 36°. Find opposite
Answer: 16cm -
4. Ratio Mixed ratio problems
Express the first part of 5:2 as a fraction in simplest form
Answer: 5⁄7 -
5. Statistics Mean
Calculate the mean of: 6, 20, 30, 32, 40, 11, 44, 22
Answer: 25.6