Keystones — Lintel
Five GCSE retrieval questions · 9 February 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.017
Answer: 1.7 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 56°. Find opposite
Answer: 22.2cm -
4. Ratio Mixed ratio problems
Divide 120 in the ratio 3:3:4
Answer: 36, 36 and 48 -
5. Statistics Mean
Calculate the mean of: 19, 22, 39, 32, 20, 42, 18
Answer: 27.4