Keystones — Lintel
Five GCSE retrieval questions · 6 August 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
61000
Answer: 6.1 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 21
Answer: (x + 7)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 26cm, angle = 41°. Find opposite
Answer: 22.6cm -
4. Ratio Mixed ratio problems
£189.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £108.00 -
5. Statistics Mean
Calculate the mean of: 10, 11, 22, 7, 31, 8
Answer: 14.8