Keystones — Lintel
Five GCSE retrieval questions · 15 April 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
430000
Answer: 4.3 × 105 -
2. Algebra Factorising monic quadratics
Factorise: x² - 10x + 24
Answer: (x - 4)(x - 6) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 37°. Find opposite
Answer: 21.cm -
4. Ratio Mixed ratio problems
Simplify the ratio 3m:300cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 41, 23, 38, 20, 16, 15
Answer: 25.5