Keystones — Lintel
Five GCSE retrieval questions · 17 February 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
6700000
Answer: 6.7 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 18cm, angle = 30°. Find opposite
Answer: 10.4cm -
4. Ratio Mixed ratio problems
Divide 80 in the ratio 2:1:1
Answer: 40, 20 and 20 -
5. Statistics Mean
Calculate the mean of: 45, 9, 43, 42, 46, 5, 44, 34
Answer: 33.5