Keystones — Lintel
Five GCSE retrieval questions · 6 June 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.06
Answer: 6 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 54°. Find opposite
Answer: 31.7cm -
4. Ratio Mixed ratio problems
Divide 200 in the ratio 4:1:3
Answer: 100, 25 and 75 -
5. Statistics Mean
Calculate the mean of: 23, 27, 9, 29, 30, 20, 40
Answer: 25.4