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Cornerstone · Grades 3–5 Keystones #1 27 July 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 27 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra Two-step equations

    Solve: 4x + 10 = 22

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

    Calculate the hypotenuse when a = 11cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 15.56cm
  4. 4. Ratio Sharing in a ratio

    Divide 119 in the ratio 4:2:1

    Answer: 68, 34 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 34, 19, 42, 33, 20, 23

    Answer: 28.5

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