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Cornerstone · Grades 3–5 Keystones #1 11 November 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 11 November 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄7 + 3⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x + 12 = 44

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

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio Sharing in a ratio

    Divide 98 in the ratio 1:4:2

    Answer: 14, 56 and 28
  5. 5. Statistics Mean

    Find the mean of: 5, 4, 6

    Answer: 5

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