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Cornerstone · Grades 3–5 Keystones #1 17 March 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 17 March 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x + 11 = 65

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

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Divide 162 in the ratio 2:3:4

    Answer: 36, 54 and 72
  5. 5. Statistics Mean

    Calculate the mean of: 29, 40, 7, 47, 16, 30. Give your answer to 2 decimal places

    Answer: 28.17

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