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Cornerstone · Grades 3–5 Keystones #1 15 July 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 15 July 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 6⁄7

    Answer: 19⁄14
  2. 2. Algebra Two-step equations

    Solve: 3x + 12 = 48

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

    Calculate the hypotenuse when a = 9cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 16.64cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 1:3

    Answer: 9 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 14, 20, 35, 6, 5, 20. Give your answer to 2 decimal places

    Answer: 16.67

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