Keystones — Lintel
Five GCSE retrieval questions · 5 March 2025 · mathsvault.uk/keystones
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1. Number Converting to standard form
98000000
Answer: 9.8 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 30
Answer: (x + 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 22cm, angle = 32°. Find adjacent side
Answer: 18.7cm -
4. Ratio Mixed ratio problems
£110.00 is shared between A and B in the ratio 2:3. How much does A receive?
Answer: £44.00 -
5. Statistics Mean
Calculate the mean of: 22, 6, 8, 32, 49, 29, 25
Answer: 24.4