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Cornerstone · Grades 3–5 Keystones #1 16 October 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 16 October 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra Two-step equations

    Solve: 7x - 10 = 25

    Answer: x = 5
  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

    Share 63 in the ratio 3:4

    Answer: 27 and 36
  5. 5. Statistics Mean

    Find the mean of: 9, 11, 20, 16

    Answer: 14

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