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

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

  1. 1. Number Converting to standard form

    Write 68,000 in standard form

    Answer: 6.8 × 104
  2. 2. Algebra Factorising monic quadratics

    Factorise: x² - x - 12

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

    Adjacent = 20cm, angle = 34°. Find opposite. Give your answer to 2 decimal places

    Answer: 13.49cm
  4. 4. Ratio Mixed ratio problems

    Divide 152 in the ratio 3:2:3

    Answer: 57, 38 and 57
  5. 5. Statistics Mean

    Calculate the mean of: 18, 18, 11, 43, 7, 35

    Answer: 22

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