Keystones — Lintel
Five GCSE retrieval questions · 5 April 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
67000000
Answer: 6.7 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 12cm, angle = 51°. Find opposite
Answer: 14.8cm -
4. Ratio Mixed ratio problems
Divide 117 in the ratio 2:4:3
Answer: 26, 52 and 39 -
5. Statistics Mean
Calculate the mean of: 21, 49, 45, 48, 38, 46, 19
Answer: 38