Keystones — Lintel
Five GCSE retrieval questions · 26 August 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
72000
Answer: 7.2 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 11cm, angle = 49°. Find opposite
Answer: 12.7cm -
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 4 numbers is 24. If 3 of them are 22, 20, 26, what is the missing number?
Answer: 28