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Cornerstone · Grades 3–5 Keystones #1 23 August 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 23 August 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 7x + 13 = 97

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Share 76 in the ratio 3:1

    Answer: 57 and 19
  5. 5. Statistics Mean

    Find the mean of: 5, 18, 19

    Answer: 14

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