Keystones — Lintel
Five GCSE retrieval questions · 16 September 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00056
Answer: 5.6 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 21cm, angle = 51°. Find opposite
Answer: 25.9cm -
4. Ratio Mixed ratio problems
Simplify the ratio 2m:200cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 38, 34, 27, 18, 41, 19
Answer: 29.5