Keystones — Lintel
Five GCSE retrieval questions · 22 February 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.001
Answer: 1 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 40cm, angle = 34°. Find adjacent side
Answer: 33.2cm -
4. Ratio Mixed ratio problems
£150.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £100.00 -
5. Statistics Mean
Calculate the mean of: 34, 25, 12, 6, 11, 48
Answer: 22.7