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Cornerstone · Grades 3–5 Keystones #1 13 April 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 13 April 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x + 10 = 70

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

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

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

    Share 120 in the ratio 1:2

    Answer: 40 and 80
  5. 5. Statistics Mean

    Calculate the mean of: 44, 28, 16, 32, 7, 13, 38. Give your answer to 2 decimal places

    Answer: 25.43

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