Keystones — Lintel
Five GCSE retrieval questions · 29 October 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
89000000
Answer: 8.9 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 36
Answer: (x - 6)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 49°. Find opposite
Answer: 25.3cm -
4. Ratio Mixed ratio problems
Divide 117 in the ratio 4:2:3
Answer: 52, 26 and 39 -
5. Statistics Mean
Calculate the mean of: 36, 48, 27, 12, 21, 42, 38, 23
Answer: 30.9