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Cornerstone · Grades 3–5 Keystones #1 9 July 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 9 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄7 + 2⁄7

    Answer: 3⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x - 15 = 37

    Answer: x = 13
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 184 in the ratio 2:1:1

    Answer: 92, 46 and 46
  5. 5. Statistics Mean

    Calculate the mean of: 34, 6, 50, 30, 34, 37, 26, 36. Give your answer to 2 decimal places

    Answer: 31.63

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