Keystones — Lintel
Five GCSE retrieval questions · 6 November 2024 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.007
Answer: 7 × 10^-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 21
Answer: (x - 3)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 43°. Find opposite
Answer: 12.cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 24, 5, 29, 30, 44, 45
Answer: 29.5