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Cornerstone · Grades 3–5 Keystones #1 26 February 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 26 February 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄9 + 2⁄9

    Answer: 7⁄9
  2. 2. Algebra Two-step equations

    Solve: 6x + 14 = 74

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

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio Sharing in a ratio

    Divide 150 in the ratio 1:2:2

    Answer: 30, 60 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 6, 24, 44, 40, 39, 20. Give your answer to 2 decimal places

    Answer: 28.83

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