Keystones — Lintel
Five GCSE retrieval questions · 7 December 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.083
Answer: 8.3 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 11x + 30
Answer: (x - 5)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 19cm, angle = 32°. Find opposite
Answer: 11.9cm -
4. Ratio Mixed ratio problems
Simplify: 12:15:18
Answer: 4:5:6 -
5. Statistics Mean
Calculate the mean of: 29, 32, 7, 24, 36, 27, 39, 17
Answer: 26.4