Keystones — Lintel
Five GCSE retrieval questions · 15 June 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0077
Answer: 7.7 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 21
Answer: (x + 7)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 38cm, angle = 33°. Find adjacent side
Answer: 31.9cm -
4. Ratio Mixed ratio problems
£288.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £96.00 -
5. Statistics Mean
Calculate the mean of: 34, 48, 23, 40, 16, 41, 5
Answer: 29.6