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Cornerstone · Grades 3–5 Keystones #1 18 March 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 18 March 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄11 + 7⁄11

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

    Solve: 5x - 7 = 63

    Answer: x = 14
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 84 in the ratio 1:2:4

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

    Calculate the mean of: 17, 43, 9, 25, 15, 28. Give your answer to 2 decimal places

    Answer: 22.83

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