Keystones — Lintel
Five GCSE retrieval questions · 15 May 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 = 21cm, angle = 58°. Find adjacent side
Answer: 11.cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
The mean of 4 numbers is 36. If 3 of them are 43, 16, 43, what is the missing number?
Answer: 42