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Cornerstone · Grades 3–5 Keystones #1 22 October 2012 Skills week 1 of 7
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Five GCSE retrieval questions · 22 October 2012 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 1⁄6 + 1⁄6

    Answer: 1⁄3
  2. 2. Algebra Two-step equations

    Solve: 7x + 4 = 60

    Answer: x = 8
  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

    Share 80 in the ratio 4:1

    Answer: 64 and 16
  5. 5. Statistics Mean

    Find the mean of: 8, 20, 14

    Answer: 14

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