Keystones — Lintel
Five GCSE retrieval questions · 1 June 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
4300000
Answer: 4.3 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 12
Answer: (x - 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 10cm, angle = 54°. Find opposite
Answer: 13.8cm -
4. Ratio Mixed ratio problems
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics Mean
The mean of 5 numbers is 33. If 4 of them are 50, 48, 33, 35, what is the missing number?
Answer: -1