Keystones — Lintel
Five GCSE retrieval questions · 17 August 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0001
Answer: 1 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 56
Answer: (x + 8)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 60°. Find opposite
Answer: 32.9cm -
4. Ratio Mixed ratio problems
In ratio 1:3:3, what fraction is the second part?
Answer: 3⁄7 -
5. Statistics Mean
The mean of 6 numbers is 37. If 5 of them are 36, 37, 22, 39, 42, what is the missing number?
Answer: 46