Keystones — Lintel
Five GCSE retrieval questions · 28 April 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
55000000
Answer: 5.5 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 48°. Find opposite
Answer: 25.5cm -
4. Ratio Mixed ratio problems
Divide 220 in the ratio 3:4:3
Answer: 66, 88 and 66 -
5. Statistics Mean
Calculate the mean of: 19, 19, 33, 5, 29, 36, 15, 9
Answer: 20.6