Keystones — Lintel
Five GCSE retrieval questions · 23 March 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.089
Answer: 8.9 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 36°. Find opposite
Answer: 21.cm -
4. Ratio Mixed ratio problems
Simplify: 8:20:12
Answer: 2:5:3 -
5. Statistics Mean
Calculate the mean of: 31, 39, 10, 47, 47, 22, 33
Answer: 32.7