Keystones — Lintel
Five GCSE retrieval questions · 25 September 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
1400000
Answer: 1.4 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 36
Answer: (x - 6)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 30°. Find opposite
Answer: 8.7cm -
4. Ratio Mixed ratio problems
£273.00 is shared between A and B in the ratio 4:3. How much does A receive?
Answer: £156.00 -
5. Statistics Mean
The mean of 6 numbers is 23. If 5 of them are 31, 32, 34, 15, 37, what is the missing number?
Answer: -11