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Cornerstone · Grades 3–5 Keystones #1 29 August 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 29 August 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 5⁄7 + 3⁄8

    Answer: 61⁄56
  2. 2. Algebra Two-step equations

    Solve: 2x - 6 = 14

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio Sharing in a ratio

    Share 52 in the ratio 1:3

    Answer: 13 and 39
  5. 5. Statistics Mean

    Calculate the mean of: 33, 33, 49, 13, 11, 50, 5. Give your answer to 2 decimal places

    Answer: 27.71

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