Keystones — Lintel
Five GCSE retrieval questions · 20 September 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.0026
Answer: 2.6 × 10^-3 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 22cm, angle = 50°. Find opposite
Answer: 26.2cm -
4. Ratio Mixed ratio problems
Divide 187 in the ratio 4:3:4
Answer: 68, 51 and 68 -
5. Statistics Mean
Calculate the mean of: 15, 33, 33, 47, 30, 19, 40
Answer: 31