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Cornerstone · Grades 3–5 Keystones #1 10 February 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 10 February 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 4⁄5

    Answer: 33⁄35
  2. 2. Algebra Two-step equations

    Solve: 5x + 11 = 46

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 135 in the ratio 4:3:2

    Answer: 60, 45 and 30
  5. 5. Statistics Mean

    Find the mean of: 12, 7, 12, 11, 8

    Answer: 10

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