Keystones — Lintel
Five GCSE retrieval questions · 18 June 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
26000
Answer: 2.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 36
Answer: (x - 6)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 39°. Find opposite
Answer: 20.2cm -
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: 41, 35, 43, 41, 41, 50, 34
Answer: 40.7