Keystones — Lintel
Five GCSE retrieval questions · 14 May 2018 · mathsvault.uk/keystones
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1. Number Converting to standard form
58000
Answer: 5.8 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 36
Answer: (x - 6)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 60°. Find opposite
Answer: 43.3cm -
4. Ratio Mixed ratio problems
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics Mean
The mean of 5 numbers is 29. If 4 of them are 40, 26, 30, 35, what is the missing number?
Answer: 14