Keystones — Lintel
Five GCSE retrieval questions · 30 October 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
47000
Answer: 4.7 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 12x + 35
Answer: (x - 7)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 33°. Find opposite
Answer: 14.9cm -
4. Ratio Mixed ratio problems
Simplify the ratio 8m:800cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 40, 46, 50, 21, 50, 13, 42
Answer: 37.4