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Cornerstone · Grades 3–5 Keystones #1 31 May 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 31 May 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄12 + 1⁄12

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

    Solve: 8x - 6 = 66

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 4cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio Sharing in a ratio

    Divide 96 in the ratio 2:3:3

    Answer: 24, 36 and 36
  5. 5. Statistics Mean

    Calculate the mean of: 21, 7, 35, 40, 40, 12, 27

    Answer: 26

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