Keystones — Lintel
Five GCSE retrieval questions · 28 April 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.064
Answer: 6.4 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 14x + 49
Answer: (x - 7)(x - 7) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 34°. Find opposite
Answer: 19.6cm -
4. Ratio Mixed ratio problems
Simplify: 9:12:18
Answer: 3:4:6 -
5. Statistics Mean
Calculate the mean of: 38, 39, 42, 10, 30, 35
Answer: 32.3