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Cornerstone · Grades 3–5 Keystones #1 20 June 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 20 June 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 2⁄4

    Answer: 15⁄14
  2. 2. Algebra Two-step equations

    Solve: 3x - 16 = 5

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 36 in the ratio 1:3

    Answer: 9 and 27
  5. 5. Statistics Mean

    Calculate the mean of: 6, 30, 40, 26, 48, 11, 24, 10. Give your answer to 2 decimal places

    Answer: 24.38

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