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Cornerstone · Grades 3–5 Keystones #1 23 November 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 23 November 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra Two-step equations

    Solve: 5x - 11 = 59

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

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio Sharing in a ratio

    Divide 140 in the ratio 1:1:3

    Answer: 28, 28 and 84
  5. 5. Statistics Mean

    Calculate the mean of: 34, 10, 40, 11, 11, 17, 24

    Answer: 21

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