Keystones — Lintel
Five GCSE retrieval questions · 6 September 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.044
Answer: 4.4 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 10
Answer: (x - 5)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 42°. Find opposite
Answer: 18cm -
4. Ratio Mixed ratio problems
Simplify: 20:8:12
Answer: 5:2:3 -
5. Statistics Mean
Calculate the mean of: 34, 26, 8, 34, 6, 24
Answer: 22