Keystones — Lintel
Five GCSE retrieval questions · 26 February 2021 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.084
Answer: 8.4 × 10^-2 -
2. Algebra Factorising monic quadratics
Factorise: x² + 2x - 3
Answer: (x + 3)(x - 1) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 39cm, angle = 29°. Find adjacent side
Answer: 34.cm -
4. Ratio Mixed ratio problems
Simplify the ratio 7m:700cm
Answer: 1:100 -
5. Statistics Mean
Calculate the mean of: 34, 47, 32, 35, 24, 35, 42
Answer: 35.6