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Cornerstone · Grades 3–5 Keystones #1 27 November 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 27 November 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄6 + 3⁄6

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

    Solve: 7x + 13 = 69

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Divide 66 in the ratio 3:1:2

    Answer: 33, 11 and 22
  5. 5. Statistics Mean

    Calculate the mean of: 26, 18, 42, 40, 47, 30, 31. Give your answer to 2 decimal places

    Answer: 33.43

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