Keystones — Lintel
Five GCSE retrieval questions · 13 June 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
8100000
Answer: 8.1 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 36
Answer: (x - 6)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 39°. Find opposite
Answer: 8.9cm -
4. Ratio Mixed ratio problems
Divide 114 in the ratio 3:1:2
Answer: 57, 19 and 38 -
5. Statistics Mean
Calculate the mean of: 10, 16, 20, 38, 41, 27, 15
Answer: 23.9