Keystones — Lintel
Five GCSE retrieval questions · 19 January 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
9900000
Answer: 9.9 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 37cm, angle = 58°. Find adjacent side
Answer: 19.6cm -
4. Ratio Mixed ratio problems
Divide 120 in the ratio 1:2:1
Answer: 30, 60 and 30 -
5. Statistics Mean
Calculate the mean of: 22, 25, 29, 39, 24, 24
Answer: 27.2