Keystones — Lintel
Five GCSE retrieval questions · 6 November 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
51000000
Answer: 5.1 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 48
Answer: (x + 8)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 37°. Find opposite
Answer: 12.cm -
4. Ratio Mixed ratio problems
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 36, 50, 34, 6, 5, 30, 20
Answer: 25.9