Keystones — Lintel
Five GCSE retrieval questions · 21 June 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
37000
Answer: 3.7 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 42
Answer: (x - 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 23cm, angle = 36°. Find opposite
Answer: 16.7cm -
4. Ratio Mixed ratio problems
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 42, 36, 22, 29, 23, 26, 42
Answer: 31.4