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Cornerstone · Grades 3–5 Keystones #1 7 November 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 7 November 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄8 + 1⁄7

    Answer: 29⁄56
  2. 2. Algebra Two-step equations

    Solve: 7x - 13 = 29

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

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio Sharing in a ratio

    Share 65 in the ratio 3:2

    Answer: 39 and 26
  5. 5. Statistics Mean

    Calculate the mean of: 44, 21, 33, 7, 27, 13, 36, 5

    Answer: 23.25

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