Keystones — Lintel
Five GCSE retrieval questions · 12 December 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0073
Answer: 7.3 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 60°. Find opposite
Answer: 41.6cm -
4. Ratio Mixed ratio problems
Divide 243 in the ratio 4:2:3
Answer: 108, 54 and 81 -
5. Statistics Mean
Calculate the mean of: 46, 9, 48, 34, 16, 27, 11
Answer: 27.3