Keystones — Lintel
Five GCSE retrieval questions · 29 May 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.004
Answer: 4 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 5)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 45°. Find opposite
Answer: 10cm -
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: 41, 37, 34, 25, 28, 36
Answer: 33.5