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Cornerstone · Grades 3–5 Keystones #1 28 July 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 28 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 4⁄6

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

    Solve: 2x + 11 = 25

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

    Calculate the hypotenuse when a = 4cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio Sharing in a ratio

    Divide 225 in the ratio 4:4:1

    Answer: 100, 100 and 25
  5. 5. Statistics Mean

    Calculate the mean of: 6, 21, 44, 41, 26, 18

    Answer: 26

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