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

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 3⁄11

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

    Solve: 7x + 9 = 30

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

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio Sharing in a ratio

    Share 102 in the ratio 2:1

    Answer: 68 and 34
  5. 5. Statistics Mean

    Calculate the mean of: 21, 9, 38, 23, 19, 30, 28, 27. Give your answer to 2 decimal places

    Answer: 24.38

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