Keystones — Lintel
Five GCSE retrieval questions · 4 May 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
25000
Answer: 2.5 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 3x - 4
Answer: (x + 4)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 59°. Find opposite
Answer: 39.9cm -
4. Ratio Mixed ratio problems
Divide 154 in the ratio 4:3:4
Answer: 56, 42 and 56 -
5. Statistics Mean
Calculate the mean of: 37, 19, 9, 32, 49, 16, 39
Answer: 28.7