Keystones — Lintel
Five GCSE retrieval questions · 18 November 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00065
Answer: 6.5 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 42
Answer: (x + 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 59°. Find opposite
Answer: 31.6cm -
4. Ratio Mixed ratio problems
£182.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £104.00 -
5. Statistics Mean
Calculate the mean of: 8, 22, 37, 18, 38, 15, 42
Answer: 25.7