Keystones — Lintel
Five GCSE retrieval questions · 7 July 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.055
Answer: 5.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 45°. Find opposite
Answer: 11cm -
4. Ratio Mixed ratio problems
Simplify: 9:15:18
Answer: 3:5:6 -
5. Statistics Mean
Calculate the mean of: 27, 41, 16, 28, 49, 31, 50
Answer: 34.6