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Cornerstone · Grades 3–5 Keystones #1 1 October 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 1 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 5⁄6

    Answer: 3⁄2
  2. 2. Algebra Two-step equations

    Solve: 8x - 14 = 26

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

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

    Answer: 5.66cm
  4. 4. Ratio Sharing in a ratio

    Share 55 in the ratio 2:3

    Answer: 22 and 33
  5. 5. Statistics Mean

    Calculate the mean of: 24, 37, 42, 33, 49, 42. Give your answer to 2 decimal places

    Answer: 37.83

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