Keystones — Lintel
Five GCSE retrieval questions · 30 June 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0069
Answer: 6.9 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 18
Answer: (x - 3)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 58°. Find opposite
Answer: 46.4cm -
4. Ratio Mixed ratio problems
£243.00 is shared between A and B in the ratio 5:4. How much does A receive?
Answer: £135.00 -
5. Statistics Mean
The mean of 4 numbers is 33. If 3 of them are 33, 18, 43, what is the missing number?
Answer: 38