Keystones — Lintel
Five GCSE retrieval questions · 2 November 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
74000
Answer: 7.4 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 21cm, angle = 39°. Find opposite
Answer: 17cm -
4. Ratio Mixed ratio problems
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 8, 30, 45, 39, 13, 33, 23
Answer: 27.3