Keystones — Lintel
Five GCSE retrieval questions · 25 February 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
10000000
Answer: 1 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 14x + 49
Answer: (x - 7)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 15cm, angle = 52°. Find opposite
Answer: 19.2cm -
4. Ratio Mixed ratio problems
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 10, 11, 41, 21, 7, 28, 18, 50
Answer: 23.3