Keystones — Lintel
Five GCSE retrieval questions · 2 December 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0039
Answer: 3.9 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 42
Answer: (x + 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 21cm, angle = 33°. Find opposite
Answer: 13.6cm -
4. Ratio Mixed ratio problems
£344.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £215.00 -
5. Statistics Mean
Calculate the mean of: 48, 31, 43, 44, 35, 29, 6, 47
Answer: 35.4