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Cornerstone · Grades 3–5 Keystones #1 29 October 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 29 October 2013 · 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 = 53

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.56cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 1:4:1

    Answer: 14, 56 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 19, 38, 48, 10, 27, 41, 36, 30. Give your answer to 2 decimal places

    Answer: 31.13

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