Keystones — Lintel
Five GCSE retrieval questions · 15 June 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0084
Answer: 8.4 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 53°. Find opposite
Answer: 33.2cm -
4. Ratio Mixed ratio problems
Simplify: 9:12:12
Answer: 3:4:4 -
5. Statistics Mean
Calculate the mean of: 5, 40, 28, 16, 27, 9, 13
Answer: 19.7