Keystones — Lintel
Five GCSE retrieval questions · 18 July 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
7800000
Answer: 7.8 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 35
Answer: (x + 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 56°. Find opposite
Answer: 22.2cm -
4. Ratio Mixed ratio problems
In ratio 1:1:2, what fraction is the second part?
Answer: 1⁄4 -
5. Statistics Mean
Calculate the mean of: 36, 49, 37, 34, 24, 23, 41, 18
Answer: 32.8