Keystones — Lintel
Five GCSE retrieval questions · 16 November 2024 · mathsvault.uk/keystones
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1. Number Converting to standard form
35000000
Answer: 3.5 × 107 -
2. Algebra Factorising monic quadratics
Factorise: x² + x - 2
Answer: (x + 2)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 28cm, angle = 52°. Find opposite
Answer: 35.8cm -
4. Ratio Mixed ratio problems
Divide 161 in the ratio 1:4:2
Answer: 23, 92 and 46 -
5. Statistics Mean
Calculate the mean of: 20, 21, 27, 10, 49, 32, 18
Answer: 25.3