Keystones — Lintel
Five GCSE retrieval questions · 19 August 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.056
Answer: 5.6 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 16
Answer: (x - 4)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 25cm, angle = 57°. Find opposite
Answer: 38.5cm -
4. Ratio Mixed ratio problems
Simplify: 16:16:24
Answer: 2:2:3 -
5. Statistics Mean
Calculate the mean of: 42, 12, 8, 25, 47, 25
Answer: 26.5