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Cornerstone · Grades 3–5 Keystones #1 14 July 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 14 July 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄10 + 2⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x - 14 = 10

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 9.9cm
  4. 4. Ratio Sharing in a ratio

    Divide 208 in the ratio 3:1:4

    Answer: 78, 26 and 104
  5. 5. Statistics Mean

    Calculate the mean of: 45, 27, 46, 22, 21, 24. Give your answer to 2 decimal places

    Answer: 30.83

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