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Cornerstone · Grades 3–5 Keystones #1 26 April 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 26 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄7 + 2⁄5

    Answer: 24⁄35
  2. 2. Algebra Two-step equations

    Solve: 3x - 5 = 19

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio Sharing in a ratio

    Share 54 in the ratio 2:1

    Answer: 36 and 18
  5. 5. Statistics Mean

    Find the mean of: 24, 15, 2, 15, 4

    Answer: 12

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