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Cornerstone · Grades 3–5 Keystones #1 14 January 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 14 January 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄11 + 6⁄11

    Answer: 7⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 10 = 40

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 182 in the ratio 3:2:2

    Answer: 78, 52 and 52
  5. 5. Statistics Mean

    Calculate the mean of: 22, 22, 32, 25, 49, 34, 49, 8. Give your answer to 2 decimal places

    Answer: 30.13

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