Keystones — Lintel
Five GCSE retrieval questions · 11 April 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
8300000
Answer: 8.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 2)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 44°. Find opposite
Answer: 16.4cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
The mean of 5 numbers is 40. If 4 of them are 26, 24, 27, 36, what is the missing number?
Answer: 87