Keystones — Lintel
Five GCSE retrieval questions · 23 May 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.022
Answer: 2.2 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 13cm, angle = 42°. Find opposite
Answer: 11.7cm -
4. Ratio Mixed ratio problems
Simplify the ratio 4m:400cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 33, 15, 50, 15, 8, 48
Answer: 28.2