Keystones — Lintel
Five GCSE retrieval questions · 17 October 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
14000
Answer: 1.4 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 3)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 49°. Find opposite
Answer: 32.2cm -
4. Ratio Mixed ratio problems
Divide 104 in the ratio 3:1:4
Answer: 39, 13 and 52 -
5. Statistics Mean
Calculate the mean of: 22, 34, 11, 40, 30, 26
Answer: 27.2