Keystones — Lintel
Five GCSE retrieval questions · 24 June 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.065
Answer: 6.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 20
Answer: (x + 5)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 48°. Find opposite
Answer: 24.4cm -
4. Ratio Mixed ratio problems
Simplify: 12:20:24
Answer: 3:5:6 -
5. Statistics Mean
Calculate the mean of: 8, 27, 39, 40, 44, 31, 28, 21
Answer: 29.8