Keystones — Lintel
Five GCSE retrieval questions · 30 March 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
58000000
Answer: 5.8 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 51°. Find opposite
Answer: 30.9cm -
4. Ratio Mixed ratio problems
Simplify: 6:10:6
Answer: 3:5:3 -
5. Statistics Mean
Calculate the mean of: 30, 19, 12, 14, 20, 38
Answer: 22.2