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

  1. 1. Number Adding fractions

    Calculate: 3⁄5 + 1⁄5

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

    Solve: 7x + 6 = 76

    Answer: x = 10
  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 72 in the ratio 1:2

    Answer: 24 and 48
  5. 5. Statistics Mean

    Calculate the mean of: 20, 31, 37, 32, 31, 29, 38, 32

    Answer: 31.25

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