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Cornerstone · Grades 3–5 Keystones #1 20 February 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 20 February 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 3⁄11

    Answer: 8⁄11
  2. 2. Algebra Two-step equations

    Solve: 8x - 14 = 34

    Answer: x = 6
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Share 28 in the ratio 1:3

    Answer: 7 and 21
  5. 5. Statistics Mean

    Calculate the mean of: 29, 46, 15, 25, 7, 23. Give your answer to 2 decimal places

    Answer: 24.17

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