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Cornerstone · Grades 3–5 Keystones #1 9 December 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 9 December 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra Two-step equations

    Solve: 4x - 12 = 32

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

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 70 in the ratio 1:3:3

    Answer: 10, 30 and 30
  5. 5. Statistics Mean

    Find the mean of: 14, 16, 18, 12

    Answer: 15

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