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Cornerstone · Grades 3–5 Keystones #1 8 November 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 8 November 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄6 + 2⁄3

    Answer: 1⁄1
  2. 2. Algebra Two-step equations

    Solve: 4x + 9 = 33

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

    Calculate the hypotenuse when a = 5cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.3cm
  4. 4. Ratio Sharing in a ratio

    Divide 225 in the ratio 2:4:3

    Answer: 50, 100 and 75
  5. 5. Statistics Mean

    Find the mean of: 11, 16, 22, 3

    Answer: 13

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