Keystones — Lintel
Five GCSE retrieval questions · 12 July 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
8300000
Answer: 8.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 24
Answer: (x - 4)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 38°. Find opposite
Answer: 14.8cm -
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: 42, 6, 6, 41, 5, 19, 48
Answer: 23.9