Keystones — Lintel
Five GCSE retrieval questions · 25 November 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.014
Answer: 1.4 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 35°. Find opposite
Answer: 15.4cm -
4. Ratio Mixed ratio problems
Simplify: 16:8:16
Answer: 2:1:2 -
5. Statistics Mean
Calculate the mean of: 46, 23, 11, 20, 20, 45
Answer: 27.5