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Cornerstone · Grades 3–5 Keystones #1 9 April 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 9 April 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Add: 1⁄3 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra Two-step equations

    Solve: 2x - 16 = 6

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

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio Sharing in a ratio

    Divide 160 in the ratio 3:1:4

    Answer: 60, 20 and 80
  5. 5. Statistics Mean

    Find the mean of: 4, 21, 11, 4

    Answer: 10

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