Keystones — Lintel
Five GCSE retrieval questions · 14 February 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
18000000
Answer: 1.8 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 30
Answer: (x + 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 37°. Find opposite
Answer: 12.cm -
4. Ratio Mixed ratio problems
£192.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £128.00 -
5. Statistics Mean
Calculate the mean of: 12, 36, 13, 39, 32, 27, 27
Answer: 26.6