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Cornerstone · Grades 3–5 Keystones #1 15 March 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 15 March 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  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 = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio Sharing in a ratio

    Share 48 in the ratio 2:1

    Answer: 32 and 16
  5. 5. Statistics Mean

    Calculate the mean of: 24, 21, 37, 14, 41, 6, 30. Give your answer to 2 decimal places

    Answer: 24.71

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