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Lintel · Grades 5–7 Keystones #1 1 March 2016 Skills week 1 of 7
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Keystones — Lintel

Five GCSE retrieval questions · 1 March 2016 · mathsvault.uk/keystones

  1. 1. Number Converting to standard form

    Write 3,000,000 in standard form

    Answer: 3 × 106
  2. 2. Algebra Factorising monic quadratics

    Factorise: x² + 6x + 9

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

    Hypotenuse = 35cm, angle = 47°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 23.87cm
  4. 4. Ratio Mixed ratio problems

    Express the first part of 11:15 as a fraction in simplest form

    Answer: 11⁄26
  5. 5. Statistics Mean

    Calculate the mean of: 36, 44, 40, 15, 11, 36, 29. Give your answer to 2 decimal places

    Answer: 30.14

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