Keystones — Lintel
Five GCSE retrieval questions · 21 July 2021 · 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 + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 49°. Find opposite
Answer: 15cm -
4. Ratio Mixed ratio problems
Express the first part of 4:6 as a fraction in simplest form
Answer: 2⁄5 -
5. Statistics Mean
Calculate the mean of: 43, 15, 21, 26, 18, 47, 49, 28
Answer: 30.9