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Cornerstone · Grades 3–5 Keystones #1 21 May 2011 Skills week 1 of 7
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Five GCSE retrieval questions · 21 May 2011 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 3⁄8 + 4⁄8

    Answer: 7⁄8
  2. 2. Algebra Two-step equations

    Solve: 6x + 7 = 79

    Answer: x = 12
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio Sharing in a ratio

    Divide 184 in the ratio 1:4:3

    Answer: 23, 92 and 69
  5. 5. Statistics Mean

    Find the mean of: 19, 13, 7, 15, 16

    Answer: 14

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