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

  1. 1. Number Adding fractions

    Calculate: 4⁄9 + 4⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x - 15 = 45

    Answer: x = 10
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 7cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio Sharing in a ratio

    Divide 114 in the ratio 3:1:2

    Answer: 57, 19 and 38
  5. 5. Statistics Mean

    Calculate the mean of: 13, 14, 36, 25, 19, 41, 15, 37

    Answer: 25

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