Keystones — Lintel
Five GCSE retrieval questions · 7 September 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
16000
Answer: 1.6 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 42
Answer: (x + 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 41°. Find opposite
Answer: 23.5cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 43, 47, 13, 50, 45, 22, 35
Answer: 36.4