Keystones — Lintel
Five GCSE retrieval questions · 2 January 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0009
Answer: 9 × 10^-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 8
Answer: (x + 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 22cm, angle = 56°. Find adjacent side
Answer: 12.3cm -
4. Ratio Mixed ratio problems
£282.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £188.00 -
5. Statistics Mean
Calculate the mean of: 23, 7, 50, 24, 17, 31, 25, 44
Answer: 27.6