Keystones — Lintel
Five GCSE retrieval questions · 9 November 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.004
Answer: 4 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 52°. Find opposite
Answer: 28.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Mean
The mean of 4 numbers is 37. If 3 of them are 41, 45, 49, what is the missing number?
Answer: 13