Keystones — Lintel
Five GCSE retrieval questions · 16 September 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
23000000
Answer: 2.3 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 24
Answer: (x + 6)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 27cm, angle = 49°. Find opposite
Answer: 31.cm -
4. Ratio Mixed ratio problems
£200.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £75.00 -
5. Statistics Mean
Calculate the mean of: 37, 31, 50, 35, 41, 34
Answer: 38