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Cornerstone · Grades 3–5 Keystones #1 9 December 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 9 December 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 7⁄11 + 2⁄11

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

    Solve: 3x - 8 = 16

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.73cm
  4. 4. Ratio Sharing in a ratio

    Share 85 in the ratio 4:1

    Answer: 68 and 17
  5. 5. Statistics Mean

    Calculate the mean of: 42, 11, 50, 14, 44, 48, 17, 29. Give your answer to 2 decimal places

    Answer: 31.88

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