Keystones — Lintel
Five GCSE retrieval questions · 12 October 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
640000
Answer: 6.4 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 8
Answer: (x + 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 48°. Find opposite
Answer: 12.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 30, 5, 39, 39, 17, 32
Answer: 27