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Cornerstone · Grades 3–5 Keystones #1 27 June 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 27 June 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 4⁄6

    Answer: 26⁄21
  2. 2. Algebra Two-step equations

    Solve: 4x - 15 = 29

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 5cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio Sharing in a ratio

    Share 25 in the ratio 3:2

    Answer: 15 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 18, 41, 15, 42, 36, 44, 18. Give your answer to 2 decimal places

    Answer: 30.57

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