Keystones — Lintel
Five GCSE retrieval questions · 8 July 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.048
Answer: 4.8 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 28
Answer: (x - 7)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 55°. Find opposite
Answer: 22.9cm -
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: 30, 42, 39, 49, 13, 36
Answer: 34.8