Keystones — Lintel
Five GCSE retrieval questions · 19 November 2024 · mathsvault.uk/keystones
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1. Number Converting to standard form
820000
Answer: 8.2 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 33°. Find opposite
Answer: 18.2cm -
4. Ratio Mixed ratio problems
Express the first part of 2:3 as a fraction in simplest form
Answer: 2⁄5 -
5. Statistics Mean
Calculate the mean of: 22, 25, 12, 42, 13, 40, 17
Answer: 24.4