Keystones — Lintel
Five GCSE retrieval questions · 30 March 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.046
Answer: 4.6 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 6)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 33°. Find opposite
Answer: 14.9cm -
4. Ratio Mixed ratio problems
Simplify: 16:20:20
Answer: 4:5:5 -
5. Statistics Mean
Calculate the mean of: 40, 14, 27, 50, 39, 49, 18, 28
Answer: 33.1