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Cornerstone · Grades 3–5 Keystones #1 28 April 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 28 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄10 + 2⁄10

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 3x + 9 = 36

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 4:1

    Answer: 68 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 45, 33, 21, 35, 17, 20, 18

    Answer: 27

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