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Cornerstone · Grades 3–5 Keystones #1 4 November 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 4 November 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x + 5 = 29

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

    Calculate the hypotenuse when a = 11cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 16.28cm
  4. 4. Ratio Sharing in a ratio

    Share 95 in the ratio 3:2

    Answer: 57 and 38
  5. 5. Statistics Mean

    Calculate the mean of: 42, 30, 15, 30, 11, 10, 18. Give your answer to 2 decimal places

    Answer: 22.29

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