Keystones — Lintel
Five GCSE retrieval questions · 1 April 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
5000000
Answer: 5 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 14
Answer: (x - 7)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 30cm, angle = 55°. Find opposite
Answer: 42.8cm -
4. Ratio Mixed ratio problems
Simplify: 10:8:12
Answer: 5:4:6 -
5. Statistics Mean
Calculate the mean of: 34, 31, 21, 36, 48, 45, 50, 15
Answer: 35