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Cornerstone · Grades 3–5 Keystones #1 29 March 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 29 March 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 37

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

    Calculate the hypotenuse when a = 6cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.16cm
  4. 4. Ratio Sharing in a ratio

    Share 56 in the ratio 3:4

    Answer: 24 and 32
  5. 5. Statistics Mean

    Calculate the mean of: 45, 14, 20, 12, 38, 20, 30. Give your answer to 2 decimal places

    Answer: 25.57

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