Keystones — Lintel
Five GCSE retrieval questions · 24 March 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
18000
Answer: 1.8 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 5
Answer: (x + 5)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 58°. Find opposite
Answer: 17.6cm -
4. Ratio Mixed ratio problems
£252.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £140.00 -
5. Statistics Mean
The mean of 4 numbers is 23. If 3 of them are 24, 26, 36, what is the missing number?
Answer: 6