Keystones — Lintel
Five GCSE retrieval questions · 15 January 2023 · mathsvault.uk/keystones
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1. Number Converting to standard form
5200000
Answer: 5.2 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 52°. Find opposite
Answer: 21.8cm -
4. Ratio Mixed ratio problems
Simplify: 15:18:12
Answer: 5:6:4 -
5. Statistics Mean
Calculate the mean of: 8, 15, 23, 38, 14, 19, 20
Answer: 19.6