Keystones Lintel — 3 April 2019

Keystones — Lintel

Five GCSE retrieval questions · 3 April 2019 · mathsvault.uk/keystones

1. Number Converting to standard form

91000000

Answer: 9.1 × 10⁷
2. Algebra Factorising monic quadratics

Factorise: x² - 5x + 6

Answer: (x - 3)(x - 2)
3. Geometry SOHCAHTOA — missing length

Adjacent = 15cm, angle = 57°. Find opposite

Answer: 23.cm
4. Ratio Mixed ratio problems

Simplify: 10:4:10

Answer: 5:2:5
5. Statistics Mean

Calculate the mean of: 11, 16, 7, 37, 11, 17

Answer: 16.5

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