Keystones — Lintel
Five GCSE retrieval questions · 22 August 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.055
Answer: 5.5 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 8
Answer: (x + 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 52°. Find opposite
Answer: 14.cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 35, 49, 19, 20, 19, 32
Answer: 29