Keystones — Lintel
Five GCSE retrieval questions · 28 June 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
33000
Answer: 3.3 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x - 8
Answer: (x + 8)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 32°. Find opposite
Answer: 11.9cm -
4. Ratio Mixed ratio problems
£329.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £141.00 -
5. Statistics Mean
The mean of 6 numbers is 26. If 5 of them are 45, 44, 26, 15, 42, what is the missing number?
Answer: -16