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Cornerstone · Grades 3–5 Keystones #1 29 November 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 29 November 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄7 + 4⁄8

    Answer: 9⁄14
  2. 2. Algebra Two-step equations

    Solve: 8x - 12 = 84

    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 132 in the ratio 2:3:1

    Answer: 44, 66 and 22
  5. 5. Statistics Mean

    Find the mean of: 10, 8, 24, 6

    Answer: 12

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