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Cornerstone · Grades 3–5 Keystones #1 14 August 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 14 August 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄11 + 4⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 6x - 18 = 48

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 3cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 6.71cm
  4. 4. Ratio Sharing in a ratio

    Divide 98 in the ratio 2:3:2

    Answer: 28, 42 and 28
  5. 5. Statistics Mean

    Calculate the mean of: 32, 30, 40, 19, 28, 31, 37, 45

    Answer: 32.75

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