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Cornerstone · Grades 3–5 Keystones #1 25 February 2016 Skills week 1 of 7
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Five GCSE retrieval questions · 25 February 2016 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 5x + 5 = 50

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

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Share 60 in the ratio 3:1

    Answer: 45 and 15
  5. 5. Statistics Mean

    Find the mean of: 12, 20, 4, 12

    Answer: 12

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