Keystones — Lintel
Five GCSE retrieval questions · 26 April 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
480000
Answer: 4.8 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 14cm, angle = 50°. Find opposite
Answer: 16.7cm -
4. Ratio Mixed ratio problems
£312.00 is shared between A and B in the ratio 5:3. How much does A receive?
Answer: £195.00 -
5. Statistics Mean
The mean of 5 numbers is 38. If 4 of them are 17, 21, 19, 41, what is the missing number?
Answer: 92