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Cornerstone · Grades 3–5 Keystones #1 27 February 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 27 February 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 4⁄9

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

    Solve: 5x + 3 = 48

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

    Calculate the hypotenuse when a = 9cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 16.64cm
  4. 4. Ratio Sharing in a ratio

    Share 45 in the ratio 2:1

    Answer: 30 and 15
  5. 5. Statistics Mean

    Calculate the mean of: 46, 39, 13, 40, 5, 20, 33

    Answer: 28

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