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Cornerstone · Grades 3–5 Keystones #1 13 July 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 13 July 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄11 + 1⁄11

    Answer: 4⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 8 = 32

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 10cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio Sharing in a ratio

    Share 15 in the ratio 2:1

    Answer: 10 and 5
  5. 5. Statistics Mean

    Find the mean of: 5, 11, 2, 18

    Answer: 9

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