Keystones — Lintel
Five GCSE retrieval questions · 2 June 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
3000000
Answer: 3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 5x + 6
Answer: (x - 3)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 55°. Find opposite
Answer: 31.4cm -
4. Ratio Mixed ratio problems
Simplify: 12:18:15
Answer: 4:6:5 -
5. Statistics Mean
The mean of 6 numbers is 39. If 5 of them are 49, 19, 47, 49, 28, what is the missing number?
Answer: 42