Keystones — Lintel
Five GCSE retrieval questions · 17 December 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
3900000
Answer: 3.9 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 16
Answer: (x + 8)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 59°. Find opposite
Answer: 41.6cm -
4. Ratio Mixed ratio problems
£282.00 is shared between A and B in the ratio 1:2. How much does A receive?
Answer: £94.00 -
5. Statistics Mean
The mean of 6 numbers is 23. If 5 of them are 46, 22, 17, 45, 32, what is the missing number?
Answer: -24