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Cornerstone · Grades 3–5 Keystones #1 23 September 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 23 September 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 4⁄9

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 7x - 19 = 44

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 3:1

    Answer: 42 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 17, 49, 27, 45, 33, 5, 37. Give your answer to 2 decimal places

    Answer: 30.43

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