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Cornerstone · Grades 3–5 Keystones #1 27 February 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 27 February 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄9 + 1⁄9

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

    Solve: 7x + 14 = 56

    Answer: x = 6
  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

    Divide 112 in the ratio 1:2:1

    Answer: 28, 56 and 28
  5. 5. Statistics Mean

    Find the mean of: 4, 11, 11, 16, 13

    Answer: 11

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