Keystones — Lintel
Five GCSE retrieval questions · 3 April 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00087
Answer: 8.7 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 4x + 4
Answer: (x - 2)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 52°. Find opposite
Answer: 16.6cm -
4. Ratio Mixed ratio problems
Divide 114 in the ratio 1:1:4
Answer: 19, 19 and 76 -
5. Statistics Mean
Calculate the mean of: 48, 17, 11, 19, 44, 28, 41, 44
Answer: 31.5