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Cornerstone · Grades 3–5 Keystones #1 14 July 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 14 July 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 4⁄8 + 4⁄5

    Answer: 13⁄10
  2. 2. Algebra Two-step equations

    Solve: 5x - 12 = 28

    Answer: x = 8
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

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

    Share 49 in the ratio 3:4

    Answer: 21 and 28
  5. 5. Statistics Mean

    Find the mean of: 21, 8, 17, 2

    Answer: 12

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