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Cornerstone · Grades 3–5 Keystones #1 5 November 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 5 November 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 2⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 5x - 19 = 26

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

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Share 52 in the ratio 3:1

    Answer: 39 and 13
  5. 5. Statistics Mean

    Find the mean of: 19, 14, 24, 4, 4

    Answer: 13

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