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Cornerstone · Grades 3–5 Keystones #1 30 April 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 30 April 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 3⁄6 + 3⁄4

    Answer: 5⁄4
  2. 2. Algebra Two-step equations

    Solve: 2x - 20 = 10

    Answer: x = 15
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio Sharing in a ratio

    Share 40 in the ratio 3:2

    Answer: 24 and 16
  5. 5. Statistics Mean

    Find the mean of: 23, 15, 17, 4, 16

    Answer: 15

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