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Cornerstone · Grades 3–5 Keystones #1 15 May 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 15 May 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra Two-step equations

    Solve: 3x - 11 = 16

    Answer: x = 9
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 2:4:1

    Answer: 24, 48 and 12
  5. 5. Statistics Mean

    Find the mean of: 14, 4, 4, 22

    Answer: 11

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