Keystones — Lintel
Five GCSE retrieval questions · 15 May 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0019
Answer: 1.9 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 33°. Find opposite
Answer: 14.9cm -
4. Ratio Mixed ratio problems
Simplify: 20:24:8
Answer: 5:6:2 -
5. Statistics Mean
Calculate the mean of: 7, 25, 36, 24, 48, 43
Answer: 30.5