Keystones — Lintel
Five GCSE retrieval questions · 24 August 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
5800000
Answer: 5.8 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 52°. Find adjacent side
Answer: 20.9cm -
4. Ratio Mixed ratio problems
Simplify: 8:24:24
Answer: 1:3:3 -
5. Statistics Mean
The mean of 6 numbers is 39. If 5 of them are 45, 19, 22, 42, 18, what is the missing number?
Answer: 88