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Cornerstone · Grades 3–5 Keystones #1 25 January 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 25 January 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 6⁄7 + 2⁄4

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

    Solve: 6x - 11 = 19

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 11cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 17.8cm
  4. 4. Ratio Sharing in a ratio

    Share 30 in the ratio 4:1

    Answer: 24 and 6
  5. 5. Statistics Mean

    Calculate the mean of: 15, 32, 46, 14, 40, 27, 6. Give your answer to 2 decimal places

    Answer: 25.71

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