Keystones — Lintel
Five GCSE retrieval questions · 26 May 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.047
Answer: 4.7 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 57°. Find opposite
Answer: 33.9cm -
4. Ratio Mixed ratio problems
Divide 90 in the ratio 4:1:4
Answer: 40, 10 and 40 -
5. Statistics Mean
Calculate the mean of: 37, 24, 23, 44, 26, 14, 48
Answer: 30.9