Keystones — Lintel
Five GCSE retrieval questions · 13 February 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
48000
Answer: 4.8 × 104 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 12
Answer: (x + 6)(x - 2) -
3. Geometry SOHCAHTOA — missing length
Adjacent = 24cm, angle = 57°. Find opposite
Answer: 37cm -
4. Ratio Mixed ratio problems
Simplify: 9:12:6
Answer: 3:4:2 -
5. Statistics Mean
Calculate the mean of: 25, 12, 35, 44, 31, 32, 39, 45
Answer: 32.9