Keystones — Lintel
Five GCSE retrieval questions · 11 May 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0049
Answer: 4.9 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 16
Answer: (x + 8)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 34°. Find opposite
Answer: 15.5cm -
4. Ratio Mixed ratio problems
Simplify: 15:15:6
Answer: 5:5:2 -
5. Statistics Mean
Calculate the mean of: 30, 45, 26, 44, 25, 38, 31, 10
Answer: 31.1