Keystones — Lintel
Five GCSE retrieval questions · 6 February 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.006
Answer: 6 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x - 8
Answer: (x + 8)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 45°. Find opposite
Answer: 17cm -
4. Ratio Mixed ratio problems
Simplify: 10:4:8
Answer: 5:2:4 -
5. Statistics Mean
Calculate the mean of: 46, 21, 44, 7, 42, 18, 36, 40
Answer: 31.8