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Cornerstone · Grades 3–5 Keystones #1 28 August 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 28 August 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 4x - 5 = 27

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 216 in the ratio 2:1:1

    Answer: 108, 54 and 54
  5. 5. Statistics Mean

    Calculate the mean of: 17, 22, 45, 17, 46, 22, 20, 40. Give your answer to 2 decimal places

    Answer: 28.63

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