Keystones — Lintel
Five GCSE retrieval questions · 11 December 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.089
Answer: 8.9 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 8x + 15
Answer: (x - 3)(x - 5) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 33cm, angle = 41°. Find adjacent side
Answer: 24.9cm -
4. Ratio Mixed ratio problems
Simplify: 16:8:8
Answer: 2:1:1 -
5. Statistics Mean
Calculate the mean of: 37, 18, 19, 37, 16, 36, 50
Answer: 30.4