Keystones — Lintel
Five GCSE retrieval questions · 17 September 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.052
Answer: 5.2 × 10^-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 14cm, angle = 60°. Find opposite
Answer: 24.2cm -
4. Ratio Mixed ratio problems
Divide 225 in the ratio 2:3:4
Answer: 50, 75 and 100 -
5. Statistics Mean
Calculate the mean of: 48, 24, 24, 17, 9, 17
Answer: 23.2