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Cornerstone · Grades 3–5 Keystones #1 6 June 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 6 June 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 3⁄8

    Answer: 3⁄4
  2. 2. Algebra Two-step equations

    Solve: 6x + 14 = 80

    Answer: x = 11
  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 90 in the ratio 2:1

    Answer: 60 and 30
  5. 5. Statistics Mean

    Calculate the mean of: 43, 8, 14, 41, 43, 15, 21, 37

    Answer: 27.75

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