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Cornerstone · Grades 3–5 Keystones #1 11 July 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 11 July 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄6

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

    Solve: 3x + 11 = 26

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

    Calculate the hypotenuse when a = 6cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 15.23cm
  4. 4. Ratio Sharing in a ratio

    Share 15 in the ratio 1:2

    Answer: 5 and 10
  5. 5. Statistics Mean

    Calculate the mean of: 33, 50, 45, 8, 48, 16. Give your answer to 2 decimal places

    Answer: 33.33

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