Keystones — Lintel
Five GCSE retrieval questions · 22 January 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00052
Answer: 5.2 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 36°. Find opposite
Answer: 9.4cm -
4. Ratio Mixed ratio problems
Simplify: 18:12:6
Answer: 3:2:1 -
5. Statistics Mean
Calculate the mean of: 42, 19, 6, 37, 18, 22, 29, 43
Answer: 27