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Cornerstone · Grades 3–5 Keystones #1 5 October 2014 Skills week 1 of 7
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Five GCSE retrieval questions · 5 October 2014 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 2⁄7 + 2⁄7

    Answer: 4⁄7
  2. 2. Algebra Two-step equations

    Solve: 7x - 6 = 22

    Answer: x = 4
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

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

    Divide 261 in the ratio 4:3:2

    Answer: 116, 87 and 58
  5. 5. Statistics Mean

    Find the mean of: 1, 17, 12, 6

    Answer: 9

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