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Cornerstone · Grades 3–5 Keystones #1 1 October 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 1 October 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 6⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x - 8 = 22

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics Mean

    Calculate the mean of: 18, 15, 24, 12, 18, 32. Give your answer to 2 decimal places

    Answer: 19.83

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