Keystones — Lintel
Five GCSE retrieval questions · 10 May 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0043
Answer: 4.3 × 10-3 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 10
Answer: (x - 5)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 29cm, angle = 58°. Find opposite
Answer: 46.4cm -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 19, 37, 43, 30, 32, 14, 48
Answer: 31.9