Keystones — Lintel
Five GCSE retrieval questions · 19 March 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
220000
Answer: 2.2 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 35
Answer: (x + 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 48°. Find opposite
Answer: 24.4cm -
4. Ratio Mixed ratio problems
Simplify: 6:6:12
Answer: 1:1:2 -
5. Statistics Mean
Calculate the mean of: 25, 24, 28, 37, 35, 35, 6, 43
Answer: 29.1