Keystones — Lintel
Five GCSE retrieval questions · 14 December 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
7700000
Answer: 7.7 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 51°. Find opposite
Answer: 23.5cm -
4. Ratio Mixed ratio problems
Divide 240 in the ratio 1:2:1
Answer: 60, 120 and 60 -
5. Statistics Mean
Calculate the mean of: 14, 32, 14, 28, 34, 34, 40, 18
Answer: 26.8