Keystones — Lintel
Five GCSE retrieval questions · 24 March 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
34000
Answer: 3.4 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 50°. Find opposite
Answer: 29.8cm -
4. Ratio Mixed ratio problems
£304.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £114.00 -
5. Statistics Mean
Calculate the mean of: 47, 16, 29, 9, 42, 5
Answer: 24.7