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Cornerstone · Grades 3–5 Keystones #1 12 April 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 12 April 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 2⁄11

    Answer: 7⁄11
  2. 2. Algebra Two-step equations

    Solve: 7x + 5 = 54

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio Sharing in a ratio

    Divide 261 in the ratio 1:4:4

    Answer: 29, 116 and 116
  5. 5. Statistics Mean

    Calculate the mean of: 19, 13, 33, 25, 33, 35, 41. Give your answer to 2 decimal places

    Answer: 28.43

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