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Cornerstone · Grades 3–5 Keystones #1 29 October 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 29 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄7 + 4⁄8

    Answer: 15⁄14
  2. 2. Algebra Two-step equations

    Solve: 5x + 13 = 33

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Calculate the hypotenuse when a = 12cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio Sharing in a ratio

    Divide 120 in the ratio 1:3:4

    Answer: 15, 45 and 60
  5. 5. Statistics Mean

    Calculate the mean of: 18, 24, 32, 16, 36, 24, 15, 23

    Answer: 23.5

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