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Cornerstone · Grades 3–5 Keystones #1 29 August 2015 Skills week 1 of 7
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Five GCSE retrieval questions · 29 August 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra Two-step equations

    Solve: 3x + 4 = 25

    Answer: x = 7
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio Sharing in a ratio

    Divide 198 in the ratio 4:1:4

    Answer: 88, 22 and 88
  5. 5. Statistics Mean

    Find the mean of: 7, 19, 11, 11

    Answer: 12

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