Keystones — Lintel
Five GCSE retrieval questions · 16 June 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00088
Answer: 8.8 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 30
Answer: (x + 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 49°. Find opposite
Answer: 26.5cm -
4. Ratio Mixed ratio problems
£216.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £120.00 -
5. Statistics Mean
Calculate the mean of: 25, 13, 22, 27, 10, 11, 22
Answer: 18.6