Keystones — Lintel
Five GCSE retrieval questions · 31 March 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
4100000
Answer: 4.1 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 16cm, angle = 47°. Find opposite
Answer: 17.2cm -
4. Ratio Mixed ratio problems
£264.00 is shared between A and B in the ratio 2:1. How much does A receive?
Answer: £176.00 -
5. Statistics Mean
The mean of 6 numbers is 36. If 5 of them are 24, 36, 25, 25, 33, what is the missing number?
Answer: 73