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Cornerstone · Grades 3–5 Keystones #1 15 August 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 15 August 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 3x + 8 = 44

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

    Calculate the hypotenuse when a = 5cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.93cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 48, 44, 6, 22, 23, 18, 27. Give your answer to 2 decimal places

    Answer: 26.86

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