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Lintel · Grades 5–7 Keystones #1 8 March 2019 Skills week 1 of 7
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Keystones — Lintel

Five GCSE retrieval questions · 8 March 2019 · mathsvault.uk/keystones

  1. 1. Number Converting to standard form

    680000

    Answer: 6.8 × 105
  2. 2. Algebra Factorising monic quadratics

    Factorise: x² + 4x - 32

    Answer: (x + 8)(x - 4)
  3. 3. Geometry SOHCAHTOA — missing length

    Hypotenuse = 29cm, angle = 63°. Find adjacent side

    Answer: 13.2cm
  4. 4. Ratio Mixed ratio problems

    Simplify: 6:12:4

    Answer: 3:6:2
  5. 5. Statistics Mean

    Calculate the mean of: 6, 47, 46, 36, 44, 39

    Answer: 36.3

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