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Cornerstone · Grades 3–5 Keystones #1 6 April 2010 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 6 April 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄11 + 2⁄11

    Answer: 7⁄11
  2. 2. Algebra Two-step equations

    Solve: 5x - 14 = 31

    Answer: x = 9
  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 77 in the ratio 2:1:4

    Answer: 22, 11 and 44
  5. 5. Statistics Mean

    Find the mean of: 19, 8, 3

    Answer: 10

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