Keystones — Lintel
Five GCSE retrieval questions · 1 May 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
71000000
Answer: 7.1 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 9x + 20
Answer: (x - 4)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 14cm, angle = 57°. Find opposite
Answer: 21.6cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 12, 50, 28, 5, 18, 5
Answer: 19.7