Keystones — Lintel
Five GCSE retrieval questions · 30 June 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00064
Answer: 6.4 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 25
Answer: (x - 5)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 34°. Find opposite
Answer: 16.9cm -
4. Ratio Mixed ratio problems
£322.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £92.00 -
5. Statistics Mean
Calculate the mean of: 24, 34, 35, 23, 34, 16, 31, 50
Answer: 30.9