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Cornerstone · Grades 3–5 Keystones #1 17 April 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 17 April 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 2⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 4x - 9 = 31

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 4:1

    Answer: 36 and 9
  5. 5. Statistics Mean

    Calculate the mean of: 7, 37, 37, 24, 41, 28, 49, 20. Give your answer to 2 decimal places

    Answer: 30.38

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