Keystones — Lintel
Five GCSE retrieval questions · 11 June 2022 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.00083
Answer: 8.3 × 10-4 -
2. Algebra Factorising monic quadratics
Factorise: x² + 4x - 5
Answer: (x + 5)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 17cm, angle = 62°. Find adjacent side
Answer: 8cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 21, 45, 46, 31, 44, 50, 8, 44
Answer: 36.1