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Cornerstone · Grades 3–5 Keystones #1 26 August 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 26 August 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 5x - 13 = 17

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 9cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.21cm
  4. 4. Ratio Sharing in a ratio

    Share 24 in the ratio 1:3

    Answer: 6 and 18
  5. 5. Statistics Mean

    Calculate the mean of: 11, 39, 13, 40, 32, 42

    Answer: 29.5

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