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Cornerstone · Grades 3–5 Keystones #1 26 October 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 26 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 2⁄9

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

    Solve: 4x + 15 = 51

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

    Calculate the hypotenuse when a = 6cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 11.66cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 1:2:2

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

    Calculate the mean of: 40, 35, 34, 38, 33, 16, 12. Give your answer to 2 decimal places

    Answer: 29.71

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