Keystones — Lintel
Five GCSE retrieval questions · 3 July 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
37000
Answer: 3.7 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² - 13x + 42
Answer: (x - 7)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 41°. Find opposite
Answer: 20.9cm -
4. Ratio Mixed ratio problems
Divide 290 in the ratio 2:2:1
Answer: 116, 116 and 58 -
5. Statistics Mean
Calculate the mean of: 43, 42, 16, 35, 9, 21, 48
Answer: 30.6