Keystones — Lintel
Five GCSE retrieval questions · 22 July 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0092
Answer: 9.2 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 58°. Find opposite
Answer: 32cm -
4. Ratio Mixed ratio problems
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 15, 46, 15, 33, 42, 23, 8
Answer: 26