Keystones — Lintel
Five GCSE retrieval questions · 13 November 2024 · mathsvault.uk/keystones
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1. Number Converting to standard form
46000000
Answer: 4.6 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 16
Answer: (x - 4)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 17cm, angle = 49°. Find opposite
Answer: 19.6cm -
4. Ratio Mixed ratio problems
In ratio 4:3:3, what fraction is the second part?
Answer: 3⁄10 -
5. Statistics Mean
Calculate the mean of: 42, 47, 44, 49, 36, 44, 5
Answer: 38.1