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Cornerstone · Grades 3–5 Keystones #1 27 September 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 27 September 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 1⁄9

    Answer: 4⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x - 9 = 69

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Share 51 in the ratio 2:1

    Answer: 34 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 10, 22, 32, 35, 11, 35, 14. Give your answer to 2 decimal places

    Answer: 22.71

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