Keystones — Lintel
Five GCSE retrieval questions · 21 April 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
70000
Answer: 7 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 22cm, angle = 58°. Find adjacent side
Answer: 11.7cm -
4. Ratio Mixed ratio problems
£333.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £185.00 -
5. Statistics Mean
Calculate the mean of: 30, 20, 15, 24, 41, 43, 33
Answer: 29.4