Keystones — Lintel
Five GCSE retrieval questions · 12 May 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
9600000
Answer: 9.6 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 24
Answer: (x + 6)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 14cm, angle = 41°. Find opposite
Answer: 12.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Mean
The mean of 4 numbers is 34. If 3 of them are 46, 32, 32, what is the missing number?
Answer: 26