Keystones — Lintel
Five GCSE retrieval questions · 5 April 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.069
Answer: 6.9 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x - 8
Answer: (x + 8)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 32cm, angle = 54°. Find adjacent side
Answer: 18.8cm -
4. Ratio Mixed ratio problems
£280.00 is shared between A and B in the ratio 3:4. How much does A receive?
Answer: £120.00 -
5. Statistics Mean
The mean of 5 numbers is 29. If 4 of them are 37, 35, 29, 48, what is the missing number?
Answer: -4