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Cornerstone · Grades 3–5 Keystones #1 19 March 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 19 March 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 6⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 19

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

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

    Answer: 12.73cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 4:1:2

    Answer: 48, 12 and 24
  5. 5. Statistics Mean

    Find the mean of: 5, 17, 3, 14, 11

    Answer: 10

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