Keystones — Lintel
Five GCSE retrieval questions · 11 March 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
3200000
Answer: 3.2 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 6x - 16
Answer: (x + 8)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 16cm, angle = 30°. Find adjacent side
Answer: 13.9cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
The mean of 5 numbers is 34. If 4 of them are 38, 21, 29, 44, what is the missing number?
Answer: 38