Keystones — Lintel
Five GCSE retrieval questions · 12 January 2023 · mathsvault.uk/keystones
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1. Number Converting to standard form
71000000
Answer: 7.1 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 6x + 8
Answer: (x - 4)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 46°. Find opposite
Answer: 30cm -
4. Ratio Mixed ratio problems
£175.00 is shared between A and B in the ratio 3:2. How much does A receive?
Answer: £105.00 -
5. Statistics Mean
The mean of 4 numbers is 36. If 3 of them are 33, 46, 36, what is the missing number?
Answer: 29