Keystones — Lintel
Five GCSE retrieval questions · 1 November 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
7900000
Answer: 7.9 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 33°. Find opposite
Answer: 7.cm -
4. Ratio Mixed ratio problems
Express the first part of 6:2 as a fraction in simplest form
Answer: 3⁄4 -
5. Statistics Mean
The mean of 5 numbers is 28. If 4 of them are 43, 26, 48, 49, what is the missing number?
Answer: -26