Keystones — Lintel
Five GCSE retrieval questions · 4 March 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00094
Answer: 9.4 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 26cm, angle = 31°. Find opposite
Answer: 15.6cm -
4. Ratio Mixed ratio problems
In ratio 2:1:1, what fraction is the second part?
Answer: 1⁄4 -
5. Statistics Mean
The mean of 6 numbers is 27. If 5 of them are 26, 47, 44, 46, 25, what is the missing number?
Answer: -26