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Cornerstone · Grades 3–5 Keystones #1 4 October 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 4 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄11 + 4⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 16 = 29

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

    Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio Sharing in a ratio

    Divide 80 in the ratio 3:4:1

    Answer: 30, 40 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 23, 30, 7, 20, 23, 12. Give your answer to 2 decimal places

    Answer: 19.17

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