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Cornerstone · Grades 3–5 Keystones #1 29 July 2013 Skills week 1 of 7
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Five GCSE retrieval questions · 29 July 2013 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra Two-step equations

    Solve: 4x - 6 = 34

    Answer: x = 10
  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 72 in the ratio 2:3:1

    Answer: 24, 36 and 12
  5. 5. Statistics Mean

    Find the mean of: 8, 4, 18, 4, 6

    Answer: 8

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