Keystones — Lintel
Five GCSE retrieval questions · 24 February 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
73000000
Answer: 7.3 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 4)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 20cm, angle = 47°. Find opposite
Answer: 21.4cm -
4. Ratio Mixed ratio problems
Divide 88 in the ratio 1:4:3
Answer: 11, 44 and 33 -
5. Statistics Mean
Calculate the mean of: 36, 39, 46, 43, 27, 16
Answer: 34.5