Keystones — Lintel
Five GCSE retrieval questions · 31 May 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
74000000
Answer: 7.4 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 12
Answer: (x + 4)(x - 3) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 47°. Find opposite
Answer: 13.9cm -
4. Ratio Mixed ratio problems
Simplify: 16:20:8
Answer: 4:5:2 -
5. Statistics Mean
Calculate the mean of: 38, 39, 35, 30, 28, 29, 37, 46
Answer: 35.3