Keystones — Lintel
Five GCSE retrieval questions · 19 June 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
19000000
Answer: 1.9 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 42
Answer: (x + 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 60°. Find opposite
Answer: 50.2cm -
4. Ratio Mixed ratio problems
£135.00 is shared between A and B in the ratio 2:3. How much does A receive?
Answer: £54.00 -
5. Statistics Mean
Calculate the mean of: 24, 40, 12, 50, 7, 16
Answer: 24.8