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Cornerstone · Grades 3–5 Keystones #1 17 April 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 17 April 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 4x + 4 = 16

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

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 60 in the ratio 1:2:2

    Answer: 12, 24 and 24
  5. 5. Statistics Mean

    Find the mean of: 17, 3, 10

    Answer: 10

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