Keystones — Lintel
Five GCSE retrieval questions · 2 January 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
1400000
Answer: 1.4 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 35°. Find opposite
Answer: 16.8cm -
4. Ratio Mixed ratio problems
Express the first part of 4:6 as a fraction in simplest form
Answer: 2⁄5 -
5. Statistics Mean
Calculate the mean of: 24, 40, 10, 15, 20, 13, 40, 32
Answer: 24.3