Keystones — Lintel
Five GCSE retrieval questions · 22 November 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.058
Answer: 5.8 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 40
Answer: (x + 8)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 14cm, angle = 54°. Find opposite
Answer: 19.3cm -
4. Ratio Mixed ratio problems
£336.00 is shared between A and B in the ratio 2:5. How much does A receive?
Answer: £96.00 -
5. Statistics Mean
The mean of 4 numbers is 38. If 3 of them are 17, 26, 36, what is the missing number?
Answer: 73