Keystones — Lintel
Five GCSE retrieval questions · 11 October 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
21000
Answer: 2.1 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 47°. Find opposite
Answer: 17.2cm -
4. Ratio Mixed ratio problems
Divide 176 in the ratio 3:4:1
Answer: 66, 88 and 22 -
5. Statistics Mean
Calculate the mean of: 45, 42, 9, 50, 45, 37, 44, 15
Answer: 35.9