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Lintel · Grades 5–7 Keystones #1 26 December 2018 Skills week 1 of 7
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Keystones — Lintel

Five GCSE retrieval questions · 26 December 2018 · mathsvault.uk/keystones

  1. 1. Number Converting to standard form

    69000

    Answer: 6.9 × 104
  2. 2. Algebra Factorising monic quadratics

    Factorise: x² + 7x - 8

    Answer: (x + 8)(x - 1)
  3. 3. Geometry SOHCAHTOA — missing length

    Hypotenuse = 18cm, angle = 50°. Find adjacent side

    Answer: 11.6cm
  4. 4. Ratio Mixed ratio problems

    Simplify: 8:10:8

    Answer: 4:5:4
  5. 5. Statistics Mean

    Calculate the mean of: 22, 34, 13, 20, 22, 33

    Answer: 24

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