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Cornerstone · Grades 3–5 Keystones #1 25 April 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 25 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄9 + 3⁄9

    Answer: 2⁄3
  2. 2. Algebra Two-step equations

    Solve: 4x - 11 = 41

    Answer: x = 13
  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

    Share 65 in the ratio 4:1

    Answer: 52 and 13
  5. 5. Statistics Mean

    Find the mean of: 7, 1, 7

    Answer: 5

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