Keystones — Lintel
Five GCSE retrieval questions · 30 July 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
8600000
Answer: 8.6 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 6
Answer: (x + 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 30cm, angle = 45°. Find opposite
Answer: 30cm -
4. Ratio Mixed ratio problems
Simplify: 10:6:6
Answer: 5:3:3 -
5. Statistics Mean
The mean of 4 numbers is 35. If 3 of them are 19, 35, 24, what is the missing number?
Answer: 62