Keystones — Lintel
Five GCSE retrieval questions · 3 October 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00032
Answer: 3.2 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 12cm, angle = 47°. Find opposite
Answer: 12.9cm -
4. Ratio Mixed ratio problems
£376.00 is shared between A and B in the ratio 3:5. How much does A receive?
Answer: £141.00 -
5. Statistics Mean
The mean of 6 numbers is 31. If 5 of them are 48, 35, 43, 22, 38, what is the missing number?
Answer: 0