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Cornerstone · Grades 3–5 Keystones #1 6 February 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 6 February 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄11 + 1⁄11

    Answer: 7⁄11
  2. 2. Algebra Two-step equations

    Solve: 7x - 5 = 37

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 168 in the ratio 3:1:3

    Answer: 72, 24 and 72
  5. 5. Statistics Mean

    Find the mean of: 14, 6, 7

    Answer: 9

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