Keystones — Lintel
Five GCSE retrieval questions · 11 December 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0017
Answer: 1.7 × 10^-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 26cm, angle = 54°. Find opposite
Answer: 35.8cm -
4. Ratio Mixed ratio problems
£224.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £64.00 -
5. Statistics Mean
Calculate the mean of: 36, 14, 41, 46, 28, 22, 42
Answer: 32.7