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Cornerstone · Grades 3–5 Keystones #1 22 September 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 22 September 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 2⁄11

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

    Solve: 4x + 5 = 17

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

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 85 in the ratio 1:2:2

    Answer: 17, 34 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 18, 40, 11, 14, 14, 46. Give your answer to 2 decimal places

    Answer: 23.83

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