Keystones — Lintel
Five GCSE retrieval questions · 19 September 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0014
Answer: 1.4 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 30
Answer: (x + 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 46°. Find opposite
Answer: 11.4cm -
4. Ratio Mixed ratio problems
£336.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £210.00 -
5. Statistics Mean
Calculate the mean of: 26, 19, 23, 34, 45, 39, 48
Answer: 33.4