Keystones — Lintel
Five GCSE retrieval questions · 30 December 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
9900000
Answer: 9.9 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 32
Answer: (x + 8)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 55°. Find opposite
Answer: 38.6cm -
4. Ratio Mixed ratio problems
Simplify: 20:24:12
Answer: 5:6:3 -
5. Statistics Mean
Calculate the mean of: 12, 31, 25, 44, 29, 45
Answer: 31