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Cornerstone · Grades 3–5 Keystones #1 21 January 2015 Skills week 1 of 7
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Keystones — Cornerstone

Five GCSE retrieval questions · 21 January 2015 · mathsvault.uk/keystones

  1. 1. Number Adding fractions

    Calculate: 4⁄7 + 2⁄7

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

    Solve: 6x + 4 = 34

    Answer: x = 5
  3. 3. Geometry Pythagoras — hypotenuse

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio Sharing in a ratio

    Divide 91 in the ratio 3:2:2

    Answer: 39, 26 and 26
  5. 5. Statistics Mean

    Find the mean of: 5, 1, 7, 7

    Answer: 5

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