Keystones — Lintel
Five GCSE retrieval questions · 20 June 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
480000
Answer: 4.8 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 41°. Find opposite
Answer: 20cm -
4. Ratio Mixed ratio problems
Divide 225 in the ratio 2:4:3
Answer: 50, 100 and 75 -
5. Statistics Mean
Calculate the mean of: 17, 48, 32, 20, 8, 22, 45, 35
Answer: 28.4