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Cornerstone · Grades 3–5 Keystones #1 27 June 2011 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 27 June 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 2⁄3 + 6⁄7

    Answer: 32⁄21
  2. 2. Algebra Two-step equations

    Solve: 3x - 17 = 19

    Answer: x = 12
  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 3:1:3

    Answer: 33, 11 and 33
  5. 5. Statistics Mean

    Find the mean of: 16, 3, 5

    Answer: 8

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