Keystones — Lintel
Five GCSE retrieval questions · 9 May 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00075
Answer: 7.5 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x + 4
Answer: (x - 2)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 41°. Find opposite
Answer: 25.2cm -
4. Ratio Mixed ratio problems
Simplify: 8:24:24
Answer: 1:3:3 -
5. Statistics Mean
Calculate the mean of: 35, 24, 46, 34, 40, 38, 22, 15
Answer: 31.8