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Cornerstone · Grades 3–5 Keystones #1 19 June 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 19 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 1⁄8

    Answer: 19⁄24
  2. 2. Algebra Two-step equations

    Solve: 2x - 17 = -1

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 56 in the ratio 2:1:1

    Answer: 28, 14 and 14
  5. 5. Statistics Mean

    Calculate the mean of: 10, 49, 30, 9, 21, 43, 31, 34. Give your answer to 2 decimal places

    Answer: 28.38

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