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Cornerstone · Grades 3–5 Keystones #1 4 July 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 4 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 1⁄11

    Answer: 5⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x + 3 = 27

    Answer: x = 4
  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

    Divide 70 in the ratio 1:4:2

    Answer: 10, 40 and 20
  5. 5. Statistics Mean

    Find the mean of: 17, 5, 9, 9

    Answer: 10

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