Keystones — Lintel
Five GCSE retrieval questions · 9 July 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0009
Answer: 9 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 32
Answer: (x + 8)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 53°. Find opposite
Answer: 14.6cm -
4. Ratio Mixed ratio problems
Simplify: 15:9:6
Answer: 5:3:2 -
5. Statistics Mean
Calculate the mean of: 29, 31, 45, 15, 19, 47
Answer: 31