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Cornerstone · Grades 3–5 Keystones #1 28 June 2010 Skills week 1 of 7
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Five GCSE retrieval questions · 28 June 2010 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄9 + 6⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 7x - 13 = 64

    Answer: x = 11
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio Sharing in a ratio

    Divide 174 in the ratio 1:1:4

    Answer: 29, 29 and 116
  5. 5. Statistics Mean

    Find the mean of: 2, 8, 20, 3, 7

    Answer: 8

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