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Lintel · Grades 5–7 Keystones #1 13 August 2019 Skills week 1 of 7
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Keystones — Lintel

Five GCSE retrieval questions · 13 August 2019 · mathsvault.uk/keystones

  1. 1. Number Converting to standard form

    36000

    Answer: 3.6 × 104
  2. 2. Algebra Factorising monic quadratics

    Factorise: x² + 3x - 10

    Answer: (x + 5)(x - 2)
  3. 3. Geometry SOHCAHTOA — missing length

    Hypotenuse = 33cm, angle = 37°. Find adjacent side

    Answer: 26.4cm
  4. 4. Ratio Mixed ratio problems

    Simplify: 20:20:8

    Answer: 5:5:2
  5. 5. Statistics Mean

    Calculate the mean of: 17, 26, 47, 44, 22, 42, 44

    Answer: 34.6

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