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Cornerstone · Grades 3–5 Keystones #1 21 June 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 21 June 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 3x - 13 = 20

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 2:3:3

    Answer: 24, 36 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 10, 43, 42, 9, 23, 29

    Answer: 26

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