Keystones — Lintel
Five GCSE retrieval questions · 11 September 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
9200000
Answer: 9.2 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 30
Answer: (x + 6)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 30cm, angle = 56°. Find adjacent side
Answer: 16.8cm -
4. Ratio Mixed ratio problems
£210.00 is shared between A and B in the ratio 2:3. How much does A receive?
Answer: £84.00 -
5. Statistics Mean
The mean of 6 numbers is 35. If 5 of them are 33, 38, 26, 15, 43, what is the missing number?
Answer: 55