Keystones — Lintel
Five GCSE retrieval questions · 28 June 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
21000000
Answer: 2.1 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 35
Answer: (x + 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 35°. Find opposite
Answer: 7cm -
4. Ratio Mixed ratio problems
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 40, 9, 38, 48, 36, 22
Answer: 32.2