Keystones — Lintel
Five GCSE retrieval questions · 22 June 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.081
Answer: 8.1 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 9
Answer: (x - 3)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 58°. Find opposite
Answer: 30.4cm -
4. Ratio Mixed ratio problems
Divide 152 in the ratio 1:3:4
Answer: 19, 57 and 76 -
5. Statistics Mean
Calculate the mean of: 26, 18, 16, 28, 46, 5
Answer: 23.2