Keystones — Lintel
Five GCSE retrieval questions · 5 April 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00029
Answer: 2.9 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 5x - 6
Answer: (x + 6)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 14cm, angle = 38°. Find opposite
Answer: 10.9cm -
4. Ratio Mixed ratio problems
Simplify: 9:12:18
Answer: 3:4:6 -
5. Statistics Mean
Calculate the mean of: 5, 26, 6, 8, 39, 10, 48, 45
Answer: 23.4