Keystones — Lintel
Five GCSE retrieval questions · 25 December 2020 · mathsvault.uk/keystones
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1. Number Converting to standard form
8400000
Answer: 8.4 × 106 -
2. Algebra Factorising monic quadratics
Factorise: x² + 7x - 8
Answer: (x + 8)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 65°. Find adjacent side
Answer: 7.2cm -
4. Ratio Mixed ratio problems
Simplify: 24:24:16
Answer: 3:3:2 -
5. Statistics Mean
Calculate the mean of: 8, 42, 22, 12, 45, 45
Answer: 29