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Cornerstone · Grades 3–5 Keystones #1 6 January 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 6 January 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 8⁄11 + 1⁄11

    Answer: 9⁄11
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 28

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

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio Sharing in a ratio

    Divide 110 in the ratio 4:3:4

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

    Calculate the mean of: 22, 41, 32, 22, 41, 11, 42, 43

    Answer: 31.75

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