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Cornerstone · Grades 3–5 Keystones #1 19 January 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 19 January 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 3x + 7 = 16

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio Sharing in a ratio

    Divide 192 in the ratio 2:3:3

    Answer: 48, 72 and 72
  5. 5. Statistics Mean

    Find the mean of: 19, 18, 9, 13, 11

    Answer: 14

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