Keystones — Lintel
Five GCSE retrieval questions · 28 July 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
5500000
Answer: 5.5 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 15
Answer: (x - 5)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 44°. Find opposite
Answer: 19.3cm -
4. Ratio Mixed ratio problems
Simplify: 6:12:6
Answer: 1:2:1 -
5. Statistics Mean
Calculate the mean of: 5, 49, 25, 49, 41, 35
Answer: 34